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Finding the Fourth Proportional to 12,753.63, 17,617.77 and 12,130.86

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Solution

The fourth proportional to 12,753.63, 17,617.77 and 12,130.86 is: 16,757.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.63 : 17,617.77 = 12,130.86 : x
  2. Step 2: Convert to fraction form
    12,753.63/17,617.77 = 12,130.86/x
  3. Step 3: Cross multiply
    12,753.63x = 17,617.77 × 12,130.86
  4. Step 4: Simplify right side
    12,753.63x = 213,718,701.38
  5. Step 5: Solve for x
    x = 213,718,701.38/12,753.63
  6. Step 6: Final answer
    x = 16,757.48

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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.