Home / 28,001.59-38,642.17-15,426.34

Finding the Fourth Proportional to 28,001.59, 38,642.17 and 15,426.34

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Solution

The fourth proportional to 28,001.59, 38,642.17 and 15,426.34 is: 21,288.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.59 : 38,642.17 = 15,426.34 : x
  2. Step 2: Convert to fraction form
    28,001.59/38,642.17 = 15,426.34/x
  3. Step 3: Cross multiply
    28,001.59x = 38,642.17 × 15,426.34
  4. Step 4: Simplify right side
    28,001.59x = 596,107,059.55
  5. Step 5: Solve for x
    x = 596,107,059.55/28,001.59
  6. Step 6: Final answer
    x = 21,288.33

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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.