Home / 20,565.36-28,380.11-11,612.84

Finding the Fourth Proportional to 20,565.36, 28,380.11 and 11,612.84

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Solution

The fourth proportional to 20,565.36, 28,380.11 and 11,612.84 is: 16,025.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.36 : 28,380.11 = 11,612.84 : x
  2. Step 2: Convert to fraction form
    20,565.36/28,380.11 = 11,612.84/x
  3. Step 3: Cross multiply
    20,565.36x = 28,380.11 × 11,612.84
  4. Step 4: Simplify right side
    20,565.36x = 329,573,476.65
  5. Step 5: Solve for x
    x = 329,573,476.65/20,565.36
  6. Step 6: Final answer
    x = 16,025.66

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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.