Home / 22,470.60-30,995.67-13,389.90

Finding the Fourth Proportional to 22,470.60, 30,995.67 and 13,389.90

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Solution

The fourth proportional to 22,470.60, 30,995.67 and 13,389.90 is: 18,469.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,470.60 : 30,995.67 = 13,389.90 : x
  2. Step 2: Convert to fraction form
    22,470.60/30,995.67 = 13,389.90/x
  3. Step 3: Cross multiply
    22,470.60x = 30,995.67 × 13,389.90
  4. Step 4: Simplify right side
    22,470.60x = 415,028,921.73
  5. Step 5: Solve for x
    x = 415,028,921.73/22,470.60
  6. Step 6: Final answer
    x = 18,469.86

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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.