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Finding the Fourth Proportional to 29,379.72, 40,543.86 and 15,950.88

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Solution

The fourth proportional to 29,379.72, 40,543.86 and 15,950.88 is: 22,012.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,379.72 : 40,543.86 = 15,950.88 : x
  2. Step 2: Convert to fraction form
    29,379.72/40,543.86 = 15,950.88/x
  3. Step 3: Cross multiply
    29,379.72x = 40,543.86 × 15,950.88
  4. Step 4: Simplify right side
    29,379.72x = 646,710,245.60
  5. Step 5: Solve for x
    x = 646,710,245.60/29,379.72
  6. Step 6: Final answer
    x = 22,012.13

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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.