Home / 28,612.26-39,484.47-15,691.50

Finding the Fourth Proportional to 28,612.26, 39,484.47 and 15,691.50

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Solution

The fourth proportional to 28,612.26, 39,484.47 and 15,691.50 is: 21,654.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.26 : 39,484.47 = 15,691.50 : x
  2. Step 2: Convert to fraction form
    28,612.26/39,484.47 = 15,691.50/x
  3. Step 3: Cross multiply
    28,612.26x = 39,484.47 × 15,691.50
  4. Step 4: Simplify right side
    28,612.26x = 619,570,561.01
  5. Step 5: Solve for x
    x = 619,570,561.01/28,612.26
  6. Step 6: Final answer
    x = 21,654.02

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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.