Home / 21,217.32-31,760.28-18,068.04

Finding the Fourth Proportional to 21,217.32, 31,760.28 and 18,068.04

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Solution

The fourth proportional to 21,217.32, 31,760.28 and 18,068.04 is: 27,046.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.32 : 31,760.28 = 18,068.04 : x
  2. Step 2: Convert to fraction form
    21,217.32/31,760.28 = 18,068.04/x
  3. Step 3: Cross multiply
    21,217.32x = 31,760.28 × 18,068.04
  4. Step 4: Simplify right side
    21,217.32x = 573,846,009.45
  5. Step 5: Solve for x
    x = 573,846,009.45/21,217.32
  6. Step 6: Final answer
    x = 27,046.11

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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.