Home / 18,671.04-28,003.68-8,280.96

Finding the Fourth Proportional to 18,671.04, 28,003.68 and 8,280.96

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Solution

The fourth proportional to 18,671.04, 28,003.68 and 8,280.96 is: 12,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.04 : 28,003.68 = 8,280.96 : x
  2. Step 2: Convert to fraction form
    18,671.04/28,003.68 = 8,280.96/x
  3. Step 3: Cross multiply
    18,671.04x = 28,003.68 × 8,280.96
  4. Step 4: Simplify right side
    18,671.04x = 231,897,353.93
  5. Step 5: Solve for x
    x = 231,897,353.93/18,671.04
  6. Step 6: Final answer
    x = 12,420.16

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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.