Home / 31,918.55-47,857.25-15,278.18

Finding the Fourth Proportional to 31,918.55, 47,857.25 and 15,278.18

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Solution

The fourth proportional to 31,918.55, 47,857.25 and 15,278.18 is: 22,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.55 : 47,857.25 = 15,278.18 : x
  2. Step 2: Convert to fraction form
    31,918.55/47,857.25 = 15,278.18/x
  3. Step 3: Cross multiply
    31,918.55x = 47,857.25 × 15,278.18
  4. Step 4: Simplify right side
    31,918.55x = 731,171,364.13
  5. Step 5: Solve for x
    x = 731,171,364.13/31,918.55
  6. Step 6: Final answer
    x = 22,907.42

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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.