Home / 18,947.34-28,425.12-7,260.57

Finding the Fourth Proportional to 18,947.34, 28,425.12 and 7,260.57

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Solution

The fourth proportional to 18,947.34, 28,425.12 and 7,260.57 is: 10,892.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.34 : 28,425.12 = 7,260.57 : x
  2. Step 2: Convert to fraction form
    18,947.34/28,425.12 = 7,260.57/x
  3. Step 3: Cross multiply
    18,947.34x = 28,425.12 × 7,260.57
  4. Step 4: Simplify right side
    18,947.34x = 206,382,573.52
  5. Step 5: Solve for x
    x = 206,382,573.52/18,947.34
  6. Step 6: Final answer
    x = 10,892.43

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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.