Home / 28,780.12-43,170.18-27,155.80

Finding the Fourth Proportional to 28,780.12, 43,170.18 and 27,155.80

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Solution

The fourth proportional to 28,780.12, 43,170.18 and 27,155.80 is: 40,733.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.12 : 43,170.18 = 27,155.80 : x
  2. Step 2: Convert to fraction form
    28,780.12/43,170.18 = 27,155.80/x
  3. Step 3: Cross multiply
    28,780.12x = 43,170.18 × 27,155.80
  4. Step 4: Simplify right side
    28,780.12x = 1,172,320,774.04
  5. Step 5: Solve for x
    x = 1,172,320,774.04/28,780.12
  6. Step 6: Final answer
    x = 40,733.70

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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.