Home / 28,722.78-43,084.71-9,000.90

Finding the Fourth Proportional to 28,722.78, 43,084.71 and 9,000.90

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Solution

The fourth proportional to 28,722.78, 43,084.71 and 9,000.90 is: 13,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.78 : 43,084.71 = 9,000.90 : x
  2. Step 2: Convert to fraction form
    28,722.78/43,084.71 = 9,000.90/x
  3. Step 3: Cross multiply
    28,722.78x = 43,084.71 × 9,000.90
  4. Step 4: Simplify right side
    28,722.78x = 387,801,166.24
  5. Step 5: Solve for x
    x = 387,801,166.24/28,722.78
  6. Step 6: Final answer
    x = 13,501.52

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Double scale
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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.