Home / 28,948.80-43,437.60-11,419.20

Finding the Fourth Proportional to 28,948.80, 43,437.60 and 11,419.20

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Solution

The fourth proportional to 28,948.80, 43,437.60 and 11,419.20 is: 17,134.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,948.80 : 43,437.60 = 11,419.20 : x
  2. Step 2: Convert to fraction form
    28,948.80/43,437.60 = 11,419.20/x
  3. Step 3: Cross multiply
    28,948.80x = 43,437.60 × 11,419.20
  4. Step 4: Simplify right side
    28,948.80x = 496,022,641.92
  5. Step 5: Solve for x
    x = 496,022,641.92/28,948.80
  6. Step 6: Final answer
    x = 17,134.48

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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.