Home / 27,209.80-40,783.10-15,531.22

Finding the Fourth Proportional to 27,209.80, 40,783.10 and 15,531.22

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Solution

The fourth proportional to 27,209.80, 40,783.10 and 15,531.22 is: 23,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,209.80 : 40,783.10 = 15,531.22 : x
  2. Step 2: Convert to fraction form
    27,209.80/40,783.10 = 15,531.22/x
  3. Step 3: Cross multiply
    27,209.80x = 40,783.10 × 15,531.22
  4. Step 4: Simplify right side
    27,209.80x = 633,411,298.38
  5. Step 5: Solve for x
    x = 633,411,298.38/27,209.80
  6. Step 6: Final answer
    x = 23,278.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.