Home / 21,086.59-31,631.19-7,047.88

Finding the Fourth Proportional to 21,086.59, 31,631.19 and 7,047.88

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Solution

The fourth proportional to 21,086.59, 31,631.19 and 7,047.88 is: 10,572.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.59 : 31,631.19 = 7,047.88 : x
  2. Step 2: Convert to fraction form
    21,086.59/31,631.19 = 7,047.88/x
  3. Step 3: Cross multiply
    21,086.59x = 31,631.19 × 7,047.88
  4. Step 4: Simplify right side
    21,086.59x = 222,932,831.38
  5. Step 5: Solve for x
    x = 222,932,831.38/21,086.59
  6. Step 6: Final answer
    x = 10,572.26

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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.