Home / 10,279.18-15,421.20-4,432.60

Finding the Fourth Proportional to 10,279.18, 15,421.20 and 4,432.60

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Solution

The fourth proportional to 10,279.18, 15,421.20 and 4,432.60 is: 6,649.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.18 : 15,421.20 = 4,432.60 : x
  2. Step 2: Convert to fraction form
    10,279.18/15,421.20 = 4,432.60/x
  3. Step 3: Cross multiply
    10,279.18x = 15,421.20 × 4,432.60
  4. Step 4: Simplify right side
    10,279.18x = 68,356,011.12
  5. Step 5: Solve for x
    x = 68,356,011.12/10,279.18
  6. Step 6: Final answer
    x = 6,649.95

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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.