Home / 18,818.76-28,196.99-8,272.96

Finding the Fourth Proportional to 18,818.76, 28,196.99 and 8,272.96

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Solution

The fourth proportional to 18,818.76, 28,196.99 and 8,272.96 is: 12,395.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.76 : 28,196.99 = 8,272.96 : x
  2. Step 2: Convert to fraction form
    18,818.76/28,196.99 = 8,272.96/x
  3. Step 3: Cross multiply
    18,818.76x = 28,196.99 × 8,272.96
  4. Step 4: Simplify right side
    18,818.76x = 233,272,545.59
  5. Step 5: Solve for x
    x = 233,272,545.59/18,818.76
  6. Step 6: Final answer
    x = 12,395.75

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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.