Home / 19,516.78-29,275.14-5,665.78

Finding the Fourth Proportional to 19,516.78, 29,275.14 and 5,665.78

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Solution

The fourth proportional to 19,516.78, 29,275.14 and 5,665.78 is: 8,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,516.78 : 29,275.14 = 5,665.78 : x
  2. Step 2: Convert to fraction form
    19,516.78/29,275.14 = 5,665.78/x
  3. Step 3: Cross multiply
    19,516.78x = 29,275.14 × 5,665.78
  4. Step 4: Simplify right side
    19,516.78x = 165,866,502.71
  5. Step 5: Solve for x
    x = 165,866,502.71/19,516.78
  6. Step 6: Final answer
    x = 8,498.66

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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.