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Finding the Fourth Proportional to 13,437.66, 18,543.12 and 7,468.98

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Solution

The fourth proportional to 13,437.66, 18,543.12 and 7,468.98 is: 10,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.66 : 18,543.12 = 7,468.98 : x
  2. Step 2: Convert to fraction form
    13,437.66/18,543.12 = 7,468.98/x
  3. Step 3: Cross multiply
    13,437.66x = 18,543.12 × 7,468.98
  4. Step 4: Simplify right side
    13,437.66x = 138,498,192.42
  5. Step 5: Solve for x
    x = 138,498,192.42/13,437.66
  6. Step 6: Final answer
    x = 10,306.72

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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.