Home / 15,691.79-21,654.59-9,404.16

Finding the Fourth Proportional to 15,691.79, 21,654.59 and 9,404.16

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Solution

The fourth proportional to 15,691.79, 21,654.59 and 9,404.16 is: 12,977.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.79 : 21,654.59 = 9,404.16 : x
  2. Step 2: Convert to fraction form
    15,691.79/21,654.59 = 9,404.16/x
  3. Step 3: Cross multiply
    15,691.79x = 21,654.59 × 9,404.16
  4. Step 4: Simplify right side
    15,691.79x = 203,643,182.07
  5. Step 5: Solve for x
    x = 203,643,182.07/15,691.79
  6. Step 6: Final answer
    x = 12,977.69

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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.