Home / 19,711.47-29,576.43-8,616.72

Finding the Fourth Proportional to 19,711.47, 29,576.43 and 8,616.72

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Solution

The fourth proportional to 19,711.47, 29,576.43 and 8,616.72 is: 12,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.47 : 29,576.43 = 8,616.72 : x
  2. Step 2: Convert to fraction form
    19,711.47/29,576.43 = 8,616.72/x
  3. Step 3: Cross multiply
    19,711.47x = 29,576.43 × 8,616.72
  4. Step 4: Simplify right side
    19,711.47x = 254,851,815.91
  5. Step 5: Solve for x
    x = 254,851,815.91/19,711.47
  6. Step 6: Final answer
    x = 12,929.11

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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.