Home / 22,213.20-30,655.04-12,142.31

Finding the Fourth Proportional to 22,213.20, 30,655.04 and 12,142.31

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Solution

The fourth proportional to 22,213.20, 30,655.04 and 12,142.31 is: 16,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,213.20 : 30,655.04 = 12,142.31 : x
  2. Step 2: Convert to fraction form
    22,213.20/30,655.04 = 12,142.31/x
  3. Step 3: Cross multiply
    22,213.20x = 30,655.04 × 12,142.31
  4. Step 4: Simplify right side
    22,213.20x = 372,223,014.67
  5. Step 5: Solve for x
    x = 372,223,014.67/22,213.20
  6. Step 6: Final answer
    x = 16,756.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.