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Finding the Fourth Proportional to 28,996.80, 43,444.80 and 13,382.40

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Solution

The fourth proportional to 28,996.80, 43,444.80 and 13,382.40 is: 20,050.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.80 : 43,444.80 = 13,382.40 : x
  2. Step 2: Convert to fraction form
    28,996.80/43,444.80 = 13,382.40/x
  3. Step 3: Cross multiply
    28,996.80x = 43,444.80 × 13,382.40
  4. Step 4: Simplify right side
    28,996.80x = 581,395,691.52
  5. Step 5: Solve for x
    x = 581,395,691.52/28,996.80
  6. Step 6: Final answer
    x = 20,050.34

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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.