Home / 20,827.32-28,742.18-11,395.91

Finding the Fourth Proportional to 20,827.32, 28,742.18 and 11,395.91

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Solution

The fourth proportional to 20,827.32, 28,742.18 and 11,395.91 is: 15,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.32 : 28,742.18 = 11,395.91 : x
  2. Step 2: Convert to fraction form
    20,827.32/28,742.18 = 11,395.91/x
  3. Step 3: Cross multiply
    20,827.32x = 28,742.18 × 11,395.91
  4. Step 4: Simplify right side
    20,827.32x = 327,543,296.48
  5. Step 5: Solve for x
    x = 327,543,296.48/20,827.32
  6. Step 6: Final answer
    x = 15,726.62

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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.