Home / 21,340.76-31,995.28-10,236.87

Finding the Fourth Proportional to 21,340.76, 31,995.28 and 10,236.87

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Solution

The fourth proportional to 21,340.76, 31,995.28 and 10,236.87 is: 15,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.76 : 31,995.28 = 10,236.87 : x
  2. Step 2: Convert to fraction form
    21,340.76/31,995.28 = 10,236.87/x
  3. Step 3: Cross multiply
    21,340.76x = 31,995.28 × 10,236.87
  4. Step 4: Simplify right side
    21,340.76x = 327,531,470.79
  5. Step 5: Solve for x
    x = 327,531,470.79/21,340.76
  6. Step 6: Final answer
    x = 15,347.70

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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.