Home / 10,502.60-15,732.30-5,311.40

Finding the Fourth Proportional to 10,502.60, 15,732.30 and 5,311.40

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Solution

The fourth proportional to 10,502.60, 15,732.30 and 5,311.40 is: 7,956.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,502.60 : 15,732.30 = 5,311.40 : x
  2. Step 2: Convert to fraction form
    10,502.60/15,732.30 = 5,311.40/x
  3. Step 3: Cross multiply
    10,502.60x = 15,732.30 × 5,311.40
  4. Step 4: Simplify right side
    10,502.60x = 83,560,538.22
  5. Step 5: Solve for x
    x = 83,560,538.22/10,502.60
  6. Step 6: Final answer
    x = 7,956.18

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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.