Home / 18,470.40-25,497.60-13,171.20

Finding the Fourth Proportional to 18,470.40, 25,497.60 and 13,171.20

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Solution

The fourth proportional to 18,470.40, 25,497.60 and 13,171.20 is: 18,182.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.40 : 25,497.60 = 13,171.20 : x
  2. Step 2: Convert to fraction form
    18,470.40/25,497.60 = 13,171.20/x
  3. Step 3: Cross multiply
    18,470.40x = 25,497.60 × 13,171.20
  4. Step 4: Simplify right side
    18,470.40x = 335,833,989.12
  5. Step 5: Solve for x
    x = 335,833,989.12/18,470.40
  6. Step 6: Final answer
    x = 18,182.28

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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.