Home / 22,221.87-30,666.11-13,274.61

Finding the Fourth Proportional to 22,221.87, 30,666.11 and 13,274.61

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Solution

The fourth proportional to 22,221.87, 30,666.11 and 13,274.61 is: 18,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,221.87 : 30,666.11 = 13,274.61 : x
  2. Step 2: Convert to fraction form
    22,221.87/30,666.11 = 13,274.61/x
  3. Step 3: Cross multiply
    22,221.87x = 30,666.11 × 13,274.61
  4. Step 4: Simplify right side
    22,221.87x = 407,080,650.47
  5. Step 5: Solve for x
    x = 407,080,650.47/22,221.87
  6. Step 6: Final answer
    x = 18,318.92

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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.