Home / 22,170.72-30,543.62-15,444.18

Finding the Fourth Proportional to 22,170.72, 30,543.62 and 15,444.18

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Solution

The fourth proportional to 22,170.72, 30,543.62 and 15,444.18 is: 21,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,170.72 : 30,543.62 = 15,444.18 : x
  2. Step 2: Convert to fraction form
    22,170.72/30,543.62 = 15,444.18/x
  3. Step 3: Cross multiply
    22,170.72x = 30,543.62 × 15,444.18
  4. Step 4: Simplify right side
    22,170.72x = 471,721,087.91
  5. Step 5: Solve for x
    x = 471,721,087.91/22,170.72
  6. Step 6: Final answer
    x = 21,276.76

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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.