Home / 21,135.47-29,167.86-11,704.04

Finding the Fourth Proportional to 21,135.47, 29,167.86 and 11,704.04

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Solution

The fourth proportional to 21,135.47, 29,167.86 and 11,704.04 is: 16,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.47 : 29,167.86 = 11,704.04 : x
  2. Step 2: Convert to fraction form
    21,135.47/29,167.86 = 11,704.04/x
  3. Step 3: Cross multiply
    21,135.47x = 29,167.86 × 11,704.04
  4. Step 4: Simplify right side
    21,135.47x = 341,381,654.32
  5. Step 5: Solve for x
    x = 341,381,654.32/21,135.47
  6. Step 6: Final answer
    x = 16,152.07

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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.