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Finding the Fourth Proportional to 22,215.20, 31,062.40 and 22,215.20

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Solution

The fourth proportional to 22,215.20, 31,062.40 and 22,215.20 is: 31,062.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.20 : 31,062.40 = 22,215.20 : x
  2. Step 2: Convert to fraction form
    22,215.20/31,062.40 = 22,215.20/x
  3. Step 3: Cross multiply
    22,215.20x = 31,062.40 × 22,215.20
  4. Step 4: Simplify right side
    22,215.20x = 690,057,428.48
  5. Step 5: Solve for x
    x = 690,057,428.48/22,215.20
  6. Step 6: Final answer
    x = 31,062.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.