Home / 18,278.61-27,428.16-9,959.21

Finding the Fourth Proportional to 18,278.61, 27,428.16 and 9,959.21

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Solution

The fourth proportional to 18,278.61, 27,428.16 and 9,959.21 is: 14,944.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.61 : 27,428.16 = 9,959.21 : x
  2. Step 2: Convert to fraction form
    18,278.61/27,428.16 = 9,959.21/x
  3. Step 3: Cross multiply
    18,278.61x = 27,428.16 × 9,959.21
  4. Step 4: Simplify right side
    18,278.61x = 273,162,668.21
  5. Step 5: Solve for x
    x = 273,162,668.21/18,278.61
  6. Step 6: Final answer
    x = 14,944.39

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1.5x scale

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.