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Finding the Fourth Proportional to 19,959.32, 29,939.10 and 5,167.22

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Solution

The fourth proportional to 19,959.32, 29,939.10 and 5,167.22 is: 7,750.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.32 : 29,939.10 = 5,167.22 : x
  2. Step 2: Convert to fraction form
    19,959.32/29,939.10 = 5,167.22/x
  3. Step 3: Cross multiply
    19,959.32x = 29,939.10 × 5,167.22
  4. Step 4: Simplify right side
    19,959.32x = 154,701,916.30
  5. Step 5: Solve for x
    x = 154,701,916.30/19,959.32
  6. Step 6: Final answer
    x = 7,750.86

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1.5x scale

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.