Home / 18,820.68-28,241.96-8,432.43

Finding the Fourth Proportional to 18,820.68, 28,241.96 and 8,432.43

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Solution

The fourth proportional to 18,820.68, 28,241.96 and 8,432.43 is: 12,653.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.68 : 28,241.96 = 8,432.43 : x
  2. Step 2: Convert to fraction form
    18,820.68/28,241.96 = 8,432.43/x
  3. Step 3: Cross multiply
    18,820.68x = 28,241.96 × 8,432.43
  4. Step 4: Simplify right side
    18,820.68x = 238,148,350.76
  5. Step 5: Solve for x
    x = 238,148,350.76/18,820.68
  6. Step 6: Final answer
    x = 12,653.55

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1.5x scale

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.