Home / 26,789.28-40,154.88-11,977.80

Finding the Fourth Proportional to 26,789.28, 40,154.88 and 11,977.80

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Solution

The fourth proportional to 26,789.28, 40,154.88 and 11,977.80 is: 17,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,789.28 : 40,154.88 = 11,977.80 : x
  2. Step 2: Convert to fraction form
    26,789.28/40,154.88 = 11,977.80/x
  3. Step 3: Cross multiply
    26,789.28x = 40,154.88 × 11,977.80
  4. Step 4: Simplify right side
    26,789.28x = 480,967,121.66
  5. Step 5: Solve for x
    x = 480,967,121.66/26,789.28
  6. Step 6: Final answer
    x = 17,953.72

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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.