Home / 20,827.13-28,741.64-11,395.89

Finding the Fourth Proportional to 20,827.13, 28,741.64 and 11,395.89

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Solution

The fourth proportional to 20,827.13, 28,741.64 and 11,395.89 is: 15,726.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.13 : 28,741.64 = 11,395.89 : x
  2. Step 2: Convert to fraction form
    20,827.13/28,741.64 = 11,395.89/x
  3. Step 3: Cross multiply
    20,827.13x = 28,741.64 × 11,395.89
  4. Step 4: Simplify right side
    20,827.13x = 327,536,510.88
  5. Step 5: Solve for x
    x = 327,536,510.88/20,827.13
  6. Step 6: Final answer
    x = 15,726.44

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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.