Home / 12,947.38-19,407.61-8,787.73

Finding the Fourth Proportional to 12,947.38, 19,407.61 and 8,787.73

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Solution

The fourth proportional to 12,947.38, 19,407.61 and 8,787.73 is: 13,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.38 : 19,407.61 = 8,787.73 : x
  2. Step 2: Convert to fraction form
    12,947.38/19,407.61 = 8,787.73/x
  3. Step 3: Cross multiply
    12,947.38x = 19,407.61 × 8,787.73
  4. Step 4: Simplify right side
    12,947.38x = 170,548,836.63
  5. Step 5: Solve for x
    x = 170,548,836.63/12,947.38
  6. Step 6: Final answer
    x = 13,172.46

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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.