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Finding the Fourth Proportional to 43,818.40, 65,737.20 and 14,231.20

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Solution

The fourth proportional to 43,818.40, 65,737.20 and 14,231.20 is: 21,349.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,818.40 : 65,737.20 = 14,231.20 : x
  2. Step 2: Convert to fraction form
    43,818.40/65,737.20 = 14,231.20/x
  3. Step 3: Cross multiply
    43,818.40x = 65,737.20 × 14,231.20
  4. Step 4: Simplify right side
    43,818.40x = 935,519,240.64
  5. Step 5: Solve for x
    x = 935,519,240.64/43,818.40
  6. Step 6: Final answer
    x = 21,349.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.