Home / 21,847.38-30,117.29-15,454.28

Finding the Fourth Proportional to 21,847.38, 30,117.29 and 15,454.28

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Solution

The fourth proportional to 21,847.38, 30,117.29 and 15,454.28 is: 21,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,847.38 : 30,117.29 = 15,454.28 : x
  2. Step 2: Convert to fraction form
    21,847.38/30,117.29 = 15,454.28/x
  3. Step 3: Cross multiply
    21,847.38x = 30,117.29 × 15,454.28
  4. Step 4: Simplify right side
    21,847.38x = 465,440,920.55
  5. Step 5: Solve for x
    x = 465,440,920.55/21,847.38
  6. Step 6: Final answer
    x = 21,304.20

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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.