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Finding the Fourth Proportional to 14,508.13, 20,020.87 and 8,135.04

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Solution

The fourth proportional to 14,508.13, 20,020.87 and 8,135.04 is: 11,226.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,508.13 : 20,020.87 = 8,135.04 : x
  2. Step 2: Convert to fraction form
    14,508.13/20,020.87 = 8,135.04/x
  3. Step 3: Cross multiply
    14,508.13x = 20,020.87 × 8,135.04
  4. Step 4: Simplify right side
    14,508.13x = 162,870,578.28
  5. Step 5: Solve for x
    x = 162,870,578.28/14,508.13
  6. Step 6: Final answer
    x = 11,226.16

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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.