Home / 28,720.19-43,080.29-8,998.74

Finding the Fourth Proportional to 28,720.19, 43,080.29 and 8,998.74

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Solution

The fourth proportional to 28,720.19, 43,080.29 and 8,998.74 is: 13,498.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.19 : 43,080.29 = 8,998.74 : x
  2. Step 2: Convert to fraction form
    28,720.19/43,080.29 = 8,998.74/x
  3. Step 3: Cross multiply
    28,720.19x = 43,080.29 × 8,998.74
  4. Step 4: Simplify right side
    28,720.19x = 387,668,283.84
  5. Step 5: Solve for x
    x = 387,668,283.84/28,720.19
  6. Step 6: Final answer
    x = 13,498.11

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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.