Home / 29,304.78-40,440.72-15,876.18

Finding the Fourth Proportional to 29,304.78, 40,440.72 and 15,876.18

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Solution

The fourth proportional to 29,304.78, 40,440.72 and 15,876.18 is: 21,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,304.78 : 40,440.72 = 15,876.18 : x
  2. Step 2: Convert to fraction form
    29,304.78/40,440.72 = 15,876.18/x
  3. Step 3: Cross multiply
    29,304.78x = 40,440.72 × 15,876.18
  4. Step 4: Simplify right side
    29,304.78x = 642,044,150.05
  5. Step 5: Solve for x
    x = 642,044,150.05/29,304.78
  6. Step 6: Final answer
    x = 21,909.20

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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.