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Finding the Fourth Proportional to 45,295.88, 67,947.14 and 12,015.21

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Solution

The fourth proportional to 45,295.88, 67,947.14 and 12,015.21 is: 18,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,295.88 : 67,947.14 = 12,015.21 : x
  2. Step 2: Convert to fraction form
    45,295.88/67,947.14 = 12,015.21/x
  3. Step 3: Cross multiply
    45,295.88x = 67,947.14 × 12,015.21
  4. Step 4: Simplify right side
    45,295.88x = 816,399,186.04
  5. Step 5: Solve for x
    x = 816,399,186.04/45,295.88
  6. Step 6: Final answer
    x = 18,023.70

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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.