Home / 18,712.86-28,069.32-5,565.36

Finding the Fourth Proportional to 18,712.86, 28,069.32 and 5,565.36

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Solution

The fourth proportional to 18,712.86, 28,069.32 and 5,565.36 is: 8,348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.86 : 28,069.32 = 5,565.36 : x
  2. Step 2: Convert to fraction form
    18,712.86/28,069.32 = 5,565.36/x
  3. Step 3: Cross multiply
    18,712.86x = 28,069.32 × 5,565.36
  4. Step 4: Simplify right side
    18,712.86x = 156,215,870.76
  5. Step 5: Solve for x
    x = 156,215,870.76/18,712.86
  6. Step 6: Final answer
    x = 8,348.05

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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.