Home / 10,902.30-16,329.15-8,423.70

Finding the Fourth Proportional to 10,902.30, 16,329.15 and 8,423.70

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Solution

The fourth proportional to 10,902.30, 16,329.15 and 8,423.70 is: 12,616.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.30 : 16,329.15 = 8,423.70 : x
  2. Step 2: Convert to fraction form
    10,902.30/16,329.15 = 8,423.70/x
  3. Step 3: Cross multiply
    10,902.30x = 16,329.15 × 8,423.70
  4. Step 4: Simplify right side
    10,902.30x = 137,551,860.86
  5. Step 5: Solve for x
    x = 137,551,860.86/10,902.30
  6. Step 6: Final answer
    x = 12,616.77

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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.