Home / 18,712.90-28,074.93-5,565.70

Finding the Fourth Proportional to 18,712.90, 28,074.93 and 5,565.70

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Solution

The fourth proportional to 18,712.90, 28,074.93 and 5,565.70 is: 8,350.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.90 : 28,074.93 = 5,565.70 : x
  2. Step 2: Convert to fraction form
    18,712.90/28,074.93 = 5,565.70/x
  3. Step 3: Cross multiply
    18,712.90x = 28,074.93 × 5,565.70
  4. Step 4: Simplify right side
    18,712.90x = 156,256,637.90
  5. Step 5: Solve for x
    x = 156,256,637.90/18,712.90
  6. Step 6: Final answer
    x = 8,350.21

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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.