Home / 18,820.17-28,241.18-8,431.92

Finding the Fourth Proportional to 18,820.17, 28,241.18 and 8,431.92

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Solution

The fourth proportional to 18,820.17, 28,241.18 and 8,431.92 is: 12,652.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.17 : 28,241.18 = 8,431.92 : x
  2. Step 2: Convert to fraction form
    18,820.17/28,241.18 = 8,431.92/x
  3. Step 3: Cross multiply
    18,820.17x = 28,241.18 × 8,431.92
  4. Step 4: Simplify right side
    18,820.17x = 238,127,370.47
  5. Step 5: Solve for x
    x = 238,127,370.47/18,820.17
  6. Step 6: Final answer
    x = 12,652.77

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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.