Home / 15,822.80-21,849.96-12,701.84

Finding the Fourth Proportional to 15,822.80, 21,849.96 and 12,701.84

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Solution

The fourth proportional to 15,822.80, 21,849.96 and 12,701.84 is: 17,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.80 : 21,849.96 = 12,701.84 : x
  2. Step 2: Convert to fraction form
    15,822.80/21,849.96 = 12,701.84/x
  3. Step 3: Cross multiply
    15,822.80x = 21,849.96 × 12,701.84
  4. Step 4: Simplify right side
    15,822.80x = 277,534,695.93
  5. Step 5: Solve for x
    x = 277,534,695.93/15,822.80
  6. Step 6: Final answer
    x = 17,540.18

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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.