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Finding the Fourth Proportional to 10,357.20, 15,535.80 and 9,433.80

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Solution

The fourth proportional to 10,357.20, 15,535.80 and 9,433.80 is: 14,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,357.20 : 15,535.80 = 9,433.80 : x
  2. Step 2: Convert to fraction form
    10,357.20/15,535.80 = 9,433.80/x
  3. Step 3: Cross multiply
    10,357.20x = 15,535.80 × 9,433.80
  4. Step 4: Simplify right side
    10,357.20x = 146,561,630.04
  5. Step 5: Solve for x
    x = 146,561,630.04/10,357.20
  6. Step 6: Final answer
    x = 14,150.70

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