Home / 22,087.28-30,470.38-13,129.70

Finding the Fourth Proportional to 22,087.28, 30,470.38 and 13,129.70

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Solution

The fourth proportional to 22,087.28, 30,470.38 and 13,129.70 is: 18,112.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,087.28 : 30,470.38 = 13,129.70 : x
  2. Step 2: Convert to fraction form
    22,087.28/30,470.38 = 13,129.70/x
  3. Step 3: Cross multiply
    22,087.28x = 30,470.38 × 13,129.70
  4. Step 4: Simplify right side
    22,087.28x = 400,066,763.11
  5. Step 5: Solve for x
    x = 400,066,763.11/22,087.28
  6. Step 6: Final answer
    x = 18,112.99

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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.