Home / 28,720.18-43,080.27-7,943.68

Finding the Fourth Proportional to 28,720.18, 43,080.27 and 7,943.68

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Solution

The fourth proportional to 28,720.18, 43,080.27 and 7,943.68 is: 11,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.18 : 43,080.27 = 7,943.68 : x
  2. Step 2: Convert to fraction form
    28,720.18/43,080.27 = 7,943.68/x
  3. Step 3: Cross multiply
    28,720.18x = 43,080.27 × 7,943.68
  4. Step 4: Simplify right side
    28,720.18x = 342,215,879.19
  5. Step 5: Solve for x
    x = 342,215,879.19/28,720.18
  6. Step 6: Final answer
    x = 11,915.52

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Similar ratio
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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.