Home / 12,977.92-19,471.44-4,659.20

Finding the Fourth Proportional to 12,977.92, 19,471.44 and 4,659.20

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Solution

The fourth proportional to 12,977.92, 19,471.44 and 4,659.20 is: 6,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.92 : 19,471.44 = 4,659.20 : x
  2. Step 2: Convert to fraction form
    12,977.92/19,471.44 = 4,659.20/x
  3. Step 3: Cross multiply
    12,977.92x = 19,471.44 × 4,659.20
  4. Step 4: Simplify right side
    12,977.92x = 90,721,333.25
  5. Step 5: Solve for x
    x = 90,721,333.25/12,977.92
  6. Step 6: Final answer
    x = 6,990.44

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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.