Home / 21,079.43-29,103.18-13,529.02

Finding the Fourth Proportional to 21,079.43, 29,103.18 and 13,529.02

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Solution

The fourth proportional to 21,079.43, 29,103.18 and 13,529.02 is: 18,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.43 : 29,103.18 = 13,529.02 : x
  2. Step 2: Convert to fraction form
    21,079.43/29,103.18 = 13,529.02/x
  3. Step 3: Cross multiply
    21,079.43x = 29,103.18 × 13,529.02
  4. Step 4: Simplify right side
    21,079.43x = 393,737,504.28
  5. Step 5: Solve for x
    x = 393,737,504.28/21,079.43
  6. Step 6: Final answer
    x = 18,678.75

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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.