Home / 18,747.78-25,871.95-10,791.55

Finding the Fourth Proportional to 18,747.78, 25,871.95 and 10,791.55

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Solution

The fourth proportional to 18,747.78, 25,871.95 and 10,791.55 is: 14,892.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.78 : 25,871.95 = 10,791.55 : x
  2. Step 2: Convert to fraction form
    18,747.78/25,871.95 = 10,791.55/x
  3. Step 3: Cross multiply
    18,747.78x = 25,871.95 × 10,791.55
  4. Step 4: Simplify right side
    18,747.78x = 279,198,442.02
  5. Step 5: Solve for x
    x = 279,198,442.02/18,747.78
  6. Step 6: Final answer
    x = 14,892.35

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1.5x scale

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.