Home / 18,947.76-28,371.92-13,370.88

Finding the Fourth Proportional to 18,947.76, 28,371.92 and 13,370.88

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Solution

The fourth proportional to 18,947.76, 28,371.92 and 13,370.88 is: 20,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.76 : 28,371.92 = 13,370.88 : x
  2. Step 2: Convert to fraction form
    18,947.76/28,371.92 = 13,370.88/x
  3. Step 3: Cross multiply
    18,947.76x = 28,371.92 × 13,370.88
  4. Step 4: Simplify right side
    18,947.76x = 379,357,537.69
  5. Step 5: Solve for x
    x = 379,357,537.69/18,947.76
  6. Step 6: Final answer
    x = 20,021.23

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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.