Home / 19,864.17-29,768.31-15,685.79

Finding the Fourth Proportional to 19,864.17, 29,768.31 and 15,685.79

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Solution

The fourth proportional to 19,864.17, 29,768.31 and 15,685.79 is: 23,506.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.17 : 29,768.31 = 15,685.79 : x
  2. Step 2: Convert to fraction form
    19,864.17/29,768.31 = 15,685.79/x
  3. Step 3: Cross multiply
    19,864.17x = 29,768.31 × 15,685.79
  4. Step 4: Simplify right side
    19,864.17x = 466,939,310.47
  5. Step 5: Solve for x
    x = 466,939,310.47/19,864.17
  6. Step 6: Final answer
    x = 23,506.61

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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.