Home / 18,521.18-27,781.14-8,646.92

Finding the Fourth Proportional to 18,521.18, 27,781.14 and 8,646.92

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Solution

The fourth proportional to 18,521.18, 27,781.14 and 8,646.92 is: 12,970.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.18 : 27,781.14 = 8,646.92 : x
  2. Step 2: Convert to fraction form
    18,521.18/27,781.14 = 8,646.92/x
  3. Step 3: Cross multiply
    18,521.18x = 27,781.14 × 8,646.92
  4. Step 4: Simplify right side
    18,521.18x = 240,221,295.09
  5. Step 5: Solve for x
    x = 240,221,295.09/18,521.18
  6. Step 6: Final answer
    x = 12,970.09

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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.