Home / 28,077.60-42,079.98-11,418.24

Finding the Fourth Proportional to 28,077.60, 42,079.98 and 11,418.24

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Solution

The fourth proportional to 28,077.60, 42,079.98 and 11,418.24 is: 17,112.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.60 : 42,079.98 = 11,418.24 : x
  2. Step 2: Convert to fraction form
    28,077.60/42,079.98 = 11,418.24/x
  3. Step 3: Cross multiply
    28,077.60x = 42,079.98 × 11,418.24
  4. Step 4: Simplify right side
    28,077.60x = 480,479,310.84
  5. Step 5: Solve for x
    x = 480,479,310.84/28,077.60
  6. Step 6: Final answer
    x = 17,112.55

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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.