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Finding the Fourth Proportional to 28,861.71, 43,296.88 and 10,138.44

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Solution

The fourth proportional to 28,861.71, 43,296.88 and 10,138.44 is: 15,209.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.71 : 43,296.88 = 10,138.44 : x
  2. Step 2: Convert to fraction form
    28,861.71/43,296.88 = 10,138.44/x
  3. Step 3: Cross multiply
    28,861.71x = 43,296.88 × 10,138.44
  4. Step 4: Simplify right side
    28,861.71x = 438,962,820.07
  5. Step 5: Solve for x
    x = 438,962,820.07/28,861.71
  6. Step 6: Final answer
    x = 15,209.18

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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.