Home / 20,712.92-28,574.73-13,996.10

Finding the Fourth Proportional to 20,712.92, 28,574.73 and 13,996.10

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Solution

The fourth proportional to 20,712.92, 28,574.73 and 13,996.10 is: 19,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.92 : 28,574.73 = 13,996.10 : x
  2. Step 2: Convert to fraction form
    20,712.92/28,574.73 = 13,996.10/x
  3. Step 3: Cross multiply
    20,712.92x = 28,574.73 × 13,996.10
  4. Step 4: Simplify right side
    20,712.92x = 399,934,759.60
  5. Step 5: Solve for x
    x = 399,934,759.60/20,712.92
  6. Step 6: Final answer
    x = 19,308.47

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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.