Home / 18,143.56-27,215.32-6,456.88

Finding the Fourth Proportional to 18,143.56, 27,215.32 and 6,456.88

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Solution

The fourth proportional to 18,143.56, 27,215.32 and 6,456.88 is: 9,685.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.56 : 27,215.32 = 6,456.88 : x
  2. Step 2: Convert to fraction form
    18,143.56/27,215.32 = 6,456.88/x
  3. Step 3: Cross multiply
    18,143.56x = 27,215.32 × 6,456.88
  4. Step 4: Simplify right side
    18,143.56x = 175,726,055.40
  5. Step 5: Solve for x
    x = 175,726,055.40/18,143.56
  6. Step 6: Final answer
    x = 9,685.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.