Home / 31,455,494.01-43,386,221.13-20,996,236.91

Finding the Fourth Proportional to 31,455,494.01, 43,386,221.13 and 20,996,236.91

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Solution

The fourth proportional to 31,455,494.01, 43,386,221.13 and 20,996,236.91 is: 28,959,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,494.01 : 43,386,221.13 = 20,996,236.91 : x
  2. Step 2: Convert to fraction form
    31,455,494.01/43,386,221.13 = 20,996,236.91/x
  3. Step 3: Cross multiply
    31,455,494.01x = 43,386,221.13 × 20,996,236.91
  4. Step 4: Simplify right side
    31,455,494.01x = 910,947,377,504,857.62
  5. Step 5: Solve for x
    x = 910,947,377,504,857.62/31,455,494.01
  6. Step 6: Final answer
    x = 28,959,881.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.