Home / 15,718.50-21,691.89-9,430.02

Finding the Fourth Proportional to 15,718.50, 21,691.89 and 9,430.02

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Solution

The fourth proportional to 15,718.50, 21,691.89 and 9,430.02 is: 13,013.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718.50 : 21,691.89 = 9,430.02 : x
  2. Step 2: Convert to fraction form
    15,718.50/21,691.89 = 9,430.02/x
  3. Step 3: Cross multiply
    15,718.50x = 21,691.89 × 9,430.02
  4. Step 4: Simplify right side
    15,718.50x = 204,554,956.54
  5. Step 5: Solve for x
    x = 204,554,956.54/15,718.50
  6. Step 6: Final answer
    x = 13,013.64

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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.