Home / 12,630.78-17,432.46-9,935.88

Finding the Fourth Proportional to 12,630.78, 17,432.46 and 9,935.88

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Solution

The fourth proportional to 12,630.78, 17,432.46 and 9,935.88 is: 13,713.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.78 : 17,432.46 = 9,935.88 : x
  2. Step 2: Convert to fraction form
    12,630.78/17,432.46 = 9,935.88/x
  3. Step 3: Cross multiply
    12,630.78x = 17,432.46 × 9,935.88
  4. Step 4: Simplify right side
    12,630.78x = 173,206,830.66
  5. Step 5: Solve for x
    x = 173,206,830.66/12,630.78
  6. Step 6: Final answer
    x = 13,713.07

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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.