Home / 12,928.29-17,849.21-8,947.95

Finding the Fourth Proportional to 12,928.29, 17,849.21 and 8,947.95

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Solution

The fourth proportional to 12,928.29, 17,849.21 and 8,947.95 is: 12,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.29 : 17,849.21 = 8,947.95 : x
  2. Step 2: Convert to fraction form
    12,928.29/17,849.21 = 8,947.95/x
  3. Step 3: Cross multiply
    12,928.29x = 17,849.21 × 8,947.95
  4. Step 4: Simplify right side
    12,928.29x = 159,713,793.88
  5. Step 5: Solve for x
    x = 159,713,793.88/12,928.29
  6. Step 6: Final answer
    x = 12,353.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.