Home / 28,947.20-43,398.12-12,309.80

Finding the Fourth Proportional to 28,947.20, 43,398.12 and 12,309.80

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Solution

The fourth proportional to 28,947.20, 43,398.12 and 12,309.80 is: 18,455.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.20 : 43,398.12 = 12,309.80 : x
  2. Step 2: Convert to fraction form
    28,947.20/43,398.12 = 12,309.80/x
  3. Step 3: Cross multiply
    28,947.20x = 43,398.12 × 12,309.80
  4. Step 4: Simplify right side
    28,947.20x = 534,222,177.58
  5. Step 5: Solve for x
    x = 534,222,177.58/28,947.20
  6. Step 6: Final answer
    x = 18,455.06

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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.