Home / 15,142.20-22,697.10-6,820.80

Finding the Fourth Proportional to 15,142.20, 22,697.10 and 6,820.80

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Solution

The fourth proportional to 15,142.20, 22,697.10 and 6,820.80 is: 10,223.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,142.20 : 22,697.10 = 6,820.80 : x
  2. Step 2: Convert to fraction form
    15,142.20/22,697.10 = 6,820.80/x
  3. Step 3: Cross multiply
    15,142.20x = 22,697.10 × 6,820.80
  4. Step 4: Simplify right side
    15,142.20x = 154,812,379.68
  5. Step 5: Solve for x
    x = 154,812,379.68/15,142.20
  6. Step 6: Final answer
    x = 10,223.90

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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.