Home / 10,279.20-15,421.20-3,706.08

Finding the Fourth Proportional to 10,279.20, 15,421.20 and 3,706.08

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Solution

The fourth proportional to 10,279.20, 15,421.20 and 3,706.08 is: 5,559.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.20 : 15,421.20 = 3,706.08 : x
  2. Step 2: Convert to fraction form
    10,279.20/15,421.20 = 3,706.08/x
  3. Step 3: Cross multiply
    10,279.20x = 15,421.20 × 3,706.08
  4. Step 4: Simplify right side
    10,279.20x = 57,152,200.90
  5. Step 5: Solve for x
    x = 57,152,200.90/10,279.20
  6. Step 6: Final answer
    x = 5,559.99

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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.