Home / 20,608.18-28,439.37-11,176.90

Finding the Fourth Proportional to 20,608.18, 28,439.37 and 11,176.90

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Solution

The fourth proportional to 20,608.18, 28,439.37 and 11,176.90 is: 15,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.18 : 28,439.37 = 11,176.90 : x
  2. Step 2: Convert to fraction form
    20,608.18/28,439.37 = 11,176.90/x
  3. Step 3: Cross multiply
    20,608.18x = 28,439.37 × 11,176.90
  4. Step 4: Simplify right side
    20,608.18x = 317,863,994.55
  5. Step 5: Solve for x
    x = 317,863,994.55/20,608.18
  6. Step 6: Final answer
    x = 15,424.17

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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.