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Finding the Fourth Proportional to 28,319.20, 42,473.12 and 26,914.12

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Solution

The fourth proportional to 28,319.20, 42,473.12 and 26,914.12 is: 40,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.20 : 42,473.12 = 26,914.12 : x
  2. Step 2: Convert to fraction form
    28,319.20/42,473.12 = 26,914.12/x
  3. Step 3: Cross multiply
    28,319.20x = 42,473.12 × 26,914.12
  4. Step 4: Simplify right side
    28,319.20x = 1,143,126,648.45
  5. Step 5: Solve for x
    x = 1,143,126,648.45/28,319.20
  6. Step 6: Final answer
    x = 40,365.78

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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.