Home / 10,915.20-16,379.15-4,589.62

Finding the Fourth Proportional to 10,915.20, 16,379.15 and 4,589.62

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Solution

The fourth proportional to 10,915.20, 16,379.15 and 4,589.62 is: 6,887.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.20 : 16,379.15 = 4,589.62 : x
  2. Step 2: Convert to fraction form
    10,915.20/16,379.15 = 4,589.62/x
  3. Step 3: Cross multiply
    10,915.20x = 16,379.15 × 4,589.62
  4. Step 4: Simplify right side
    10,915.20x = 75,174,088.86
  5. Step 5: Solve for x
    x = 75,174,088.86/10,915.20
  6. Step 6: Final answer
    x = 6,887.10

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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.