Home / 31,455,380.36-43,386,064.27-20,996,123.27

Finding the Fourth Proportional to 31,455,380.36, 43,386,064.27 and 20,996,123.27

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Solution

The fourth proportional to 31,455,380.36, 43,386,064.27 and 20,996,123.27 is: 28,959,724.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,380.36 : 43,386,064.27 = 20,996,123.27 : x
  2. Step 2: Convert to fraction form
    31,455,380.36/43,386,064.27 = 20,996,123.27/x
  3. Step 3: Cross multiply
    31,455,380.36x = 43,386,064.27 × 20,996,123.27
  4. Step 4: Simplify right side
    31,455,380.36x = 910,939,153,343,641.88
  5. Step 5: Solve for x
    x = 910,939,153,343,641.88/31,455,380.36
  6. Step 6: Final answer
    x = 28,959,724.63

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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.