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Finding the Fourth Proportional to 12,139.10, 16,752.29 and 6,834.11

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Solution

The fourth proportional to 12,139.10, 16,752.29 and 6,834.11 is: 9,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.10 : 16,752.29 = 6,834.11 : x
  2. Step 2: Convert to fraction form
    12,139.10/16,752.29 = 6,834.11/x
  3. Step 3: Cross multiply
    12,139.10x = 16,752.29 × 6,834.11
  4. Step 4: Simplify right side
    12,139.10x = 114,486,874.68
  5. Step 5: Solve for x
    x = 114,486,874.68/12,139.10
  6. Step 6: Final answer
    x = 9,431.25

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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.