Home / 10,923.20-16,385.28-3,132.80

Finding the Fourth Proportional to 10,923.20, 16,385.28 and 3,132.80

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Solution

The fourth proportional to 10,923.20, 16,385.28 and 3,132.80 is: 4,699.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,923.20 : 16,385.28 = 3,132.80 : x
  2. Step 2: Convert to fraction form
    10,923.20/16,385.28 = 3,132.80/x
  3. Step 3: Cross multiply
    10,923.20x = 16,385.28 × 3,132.80
  4. Step 4: Simplify right side
    10,923.20x = 51,331,805.18
  5. Step 5: Solve for x
    x = 51,331,805.18/10,923.20
  6. Step 6: Final answer
    x = 4,699.34

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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.