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Finding the Fourth Proportional to 12,149.13, 16,766.99 and 7,113.04

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Solution

The fourth proportional to 12,149.13, 16,766.99 and 7,113.04 is: 9,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.13 : 16,766.99 = 7,113.04 : x
  2. Step 2: Convert to fraction form
    12,149.13/16,766.99 = 7,113.04/x
  3. Step 3: Cross multiply
    12,149.13x = 16,766.99 × 7,113.04
  4. Step 4: Simplify right side
    12,149.13x = 119,264,270.55
  5. Step 5: Solve for x
    x = 119,264,270.55/12,149.13
  6. Step 6: Final answer
    x = 9,816.69

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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.