Home / 10,489.11-15,729.06-5,557.62

Finding the Fourth Proportional to 10,489.11, 15,729.06 and 5,557.62

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Solution

The fourth proportional to 10,489.11, 15,729.06 and 5,557.62 is: 8,333.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.11 : 15,729.06 = 5,557.62 : x
  2. Step 2: Convert to fraction form
    10,489.11/15,729.06 = 5,557.62/x
  3. Step 3: Cross multiply
    10,489.11x = 15,729.06 × 5,557.62
  4. Step 4: Simplify right side
    10,489.11x = 87,416,138.44
  5. Step 5: Solve for x
    x = 87,416,138.44/10,489.11
  6. Step 6: Final answer
    x = 8,333.99

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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.