Home / 19,879.38-27,432.98-10,926.88

Finding the Fourth Proportional to 19,879.38, 27,432.98 and 10,926.88

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Solution

The fourth proportional to 19,879.38, 27,432.98 and 10,926.88 is: 15,078.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.38 : 27,432.98 = 10,926.88 : x
  2. Step 2: Convert to fraction form
    19,879.38/27,432.98 = 10,926.88/x
  3. Step 3: Cross multiply
    19,879.38x = 27,432.98 × 10,926.88
  4. Step 4: Simplify right side
    19,879.38x = 299,756,880.50
  5. Step 5: Solve for x
    x = 299,756,880.50/19,879.38
  6. Step 6: Final answer
    x = 15,078.78

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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.