Home / 10,885.30-15,000.21-7,732.66

Finding the Fourth Proportional to 10,885.30, 15,000.21 and 7,732.66

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Solution

The fourth proportional to 10,885.30, 15,000.21 and 7,732.66 is: 10,655.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.30 : 15,000.21 = 7,732.66 : x
  2. Step 2: Convert to fraction form
    10,885.30/15,000.21 = 7,732.66/x
  3. Step 3: Cross multiply
    10,885.30x = 15,000.21 × 7,732.66
  4. Step 4: Simplify right side
    10,885.30x = 115,991,523.86
  5. Step 5: Solve for x
    x = 115,991,523.86/10,885.30
  6. Step 6: Final answer
    x = 10,655.79

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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.