Home / 19,851.29-29,738-11,513.79

Finding the Fourth Proportional to 19,851.29, 29,738 and 11,513.79

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Solution

The fourth proportional to 19,851.29, 29,738 and 11,513.79 is: 17,248.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.29 : 29,738 = 11,513.79 : x
  2. Step 2: Convert to fraction form
    19,851.29/29,738 = 11,513.79/x
  3. Step 3: Cross multiply
    19,851.29x = 29,738 × 11,513.79
  4. Step 4: Simplify right side
    19,851.29x = 342,397,087.02
  5. Step 5: Solve for x
    x = 342,397,087.02/19,851.29
  6. Step 6: Final answer
    x = 17,248.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.