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Finding the Fourth Proportional to 29,393.86, 40,591.18 and 20,465.78

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Solution

The fourth proportional to 29,393.86, 40,591.18 and 20,465.78 is: 28,262.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,393.86 : 40,591.18 = 20,465.78 : x
  2. Step 2: Convert to fraction form
    29,393.86/40,591.18 = 20,465.78/x
  3. Step 3: Cross multiply
    29,393.86x = 40,591.18 × 20,465.78
  4. Step 4: Simplify right side
    29,393.86x = 830,730,159.82
  5. Step 5: Solve for x
    x = 830,730,159.82/29,393.86
  6. Step 6: Final answer
    x = 28,262.03

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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.