Home / 23,070.15-31,836.80-12,459.78

Finding the Fourth Proportional to 23,070.15, 31,836.80 and 12,459.78

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Solution

The fourth proportional to 23,070.15, 31,836.80 and 12,459.78 is: 17,194.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,070.15 : 31,836.80 = 12,459.78 : x
  2. Step 2: Convert to fraction form
    23,070.15/31,836.80 = 12,459.78/x
  3. Step 3: Cross multiply
    23,070.15x = 31,836.80 × 12,459.78
  4. Step 4: Simplify right side
    23,070.15x = 396,679,523.90
  5. Step 5: Solve for x
    x = 396,679,523.90/23,070.15
  6. Step 6: Final answer
    x = 17,194.49

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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.