Home / 20,565.18-28,376.89-11,612.48

Finding the Fourth Proportional to 20,565.18, 28,376.89 and 11,612.48

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Solution

The fourth proportional to 20,565.18, 28,376.89 and 11,612.48 is: 16,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.18 : 28,376.89 = 11,612.48 : x
  2. Step 2: Convert to fraction form
    20,565.18/28,376.89 = 11,612.48/x
  3. Step 3: Cross multiply
    20,565.18x = 28,376.89 × 11,612.48
  4. Step 4: Simplify right side
    20,565.18x = 329,526,067.59
  5. Step 5: Solve for x
    x = 329,526,067.59/20,565.18
  6. Step 6: Final answer
    x = 16,023.50

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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.