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Finding the Fourth Proportional to 18,929.59, 28,411.97 and 9,576.22

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Solution

The fourth proportional to 18,929.59, 28,411.97 and 9,576.22 is: 14,373.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.59 : 28,411.97 = 9,576.22 : x
  2. Step 2: Convert to fraction form
    18,929.59/28,411.97 = 9,576.22/x
  3. Step 3: Cross multiply
    18,929.59x = 28,411.97 × 9,576.22
  4. Step 4: Simplify right side
    18,929.59x = 272,079,275.35
  5. Step 5: Solve for x
    x = 272,079,275.35/18,929.59
  6. Step 6: Final answer
    x = 14,373.23

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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.