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Finding the Fourth Proportional to 15,038.91, 20,752.83 and 8,324.28

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Solution

The fourth proportional to 15,038.91, 20,752.83 and 8,324.28 is: 11,487.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038.91 : 20,752.83 = 8,324.28 : x
  2. Step 2: Convert to fraction form
    15,038.91/20,752.83 = 8,324.28/x
  3. Step 3: Cross multiply
    15,038.91x = 20,752.83 × 8,324.28
  4. Step 4: Simplify right side
    15,038.91x = 172,752,367.71
  5. Step 5: Solve for x
    x = 172,752,367.71/15,038.91
  6. Step 6: Final answer
    x = 11,487.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.