Home / 18,639.38-27,959.11-7,538.47

Finding the Fourth Proportional to 18,639.38, 27,959.11 and 7,538.47

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Solution

The fourth proportional to 18,639.38, 27,959.11 and 7,538.47 is: 11,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.38 : 27,959.11 = 7,538.47 : x
  2. Step 2: Convert to fraction form
    18,639.38/27,959.11 = 7,538.47/x
  3. Step 3: Cross multiply
    18,639.38x = 27,959.11 × 7,538.47
  4. Step 4: Simplify right side
    18,639.38x = 210,768,823.22
  5. Step 5: Solve for x
    x = 210,768,823.22/18,639.38
  6. Step 6: Final answer
    x = 11,307.71

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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.