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Finding the Fourth Proportional to 28,778.76, 43,187.70 and 10,310.76

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Solution

The fourth proportional to 28,778.76, 43,187.70 and 10,310.76 is: 15,473.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.76 : 43,187.70 = 10,310.76 : x
  2. Step 2: Convert to fraction form
    28,778.76/43,187.70 = 10,310.76/x
  3. Step 3: Cross multiply
    28,778.76x = 43,187.70 × 10,310.76
  4. Step 4: Simplify right side
    28,778.76x = 445,298,009.65
  5. Step 5: Solve for x
    x = 445,298,009.65/28,778.76
  6. Step 6: Final answer
    x = 15,473.15

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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.