Home / 18,456.81-25,470.40-11,387.34

Finding the Fourth Proportional to 18,456.81, 25,470.40 and 11,387.34

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Solution

The fourth proportional to 18,456.81, 25,470.40 and 11,387.34 is: 15,714.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.81 : 25,470.40 = 11,387.34 : x
  2. Step 2: Convert to fraction form
    18,456.81/25,470.40 = 11,387.34/x
  3. Step 3: Cross multiply
    18,456.81x = 25,470.40 × 11,387.34
  4. Step 4: Simplify right side
    18,456.81x = 290,040,104.74
  5. Step 5: Solve for x
    x = 290,040,104.74/18,456.81
  6. Step 6: Final answer
    x = 15,714.53

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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.