Home / 12,738.64-19,120.92-8,565.52

Finding the Fourth Proportional to 12,738.64, 19,120.92 and 8,565.52

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Solution

The fourth proportional to 12,738.64, 19,120.92 and 8,565.52 is: 12,856.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.64 : 19,120.92 = 8,565.52 : x
  2. Step 2: Convert to fraction form
    12,738.64/19,120.92 = 8,565.52/x
  3. Step 3: Cross multiply
    12,738.64x = 19,120.92 × 8,565.52
  4. Step 4: Simplify right side
    12,738.64x = 163,780,622.68
  5. Step 5: Solve for x
    x = 163,780,622.68/12,738.64
  6. Step 6: Final answer
    x = 12,856.99

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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.