Home / 12,712.20-19,071.96-3,947.16

Finding the Fourth Proportional to 12,712.20, 19,071.96 and 3,947.16

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Solution

The fourth proportional to 12,712.20, 19,071.96 and 3,947.16 is: 5,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.20 : 19,071.96 = 3,947.16 : x
  2. Step 2: Convert to fraction form
    12,712.20/19,071.96 = 3,947.16/x
  3. Step 3: Cross multiply
    12,712.20x = 19,071.96 × 3,947.16
  4. Step 4: Simplify right side
    12,712.20x = 75,280,077.63
  5. Step 5: Solve for x
    x = 75,280,077.63/12,712.20
  6. Step 6: Final answer
    x = 5,921.88

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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.