Home / 18,582.40-27,876.32-8,722.68

Finding the Fourth Proportional to 18,582.40, 27,876.32 and 8,722.68

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Solution

The fourth proportional to 18,582.40, 27,876.32 and 8,722.68 is: 13,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,582.40 : 27,876.32 = 8,722.68 : x
  2. Step 2: Convert to fraction form
    18,582.40/27,876.32 = 8,722.68/x
  3. Step 3: Cross multiply
    18,582.40x = 27,876.32 × 8,722.68
  4. Step 4: Simplify right side
    18,582.40x = 243,156,218.94
  5. Step 5: Solve for x
    x = 243,156,218.94/18,582.40
  6. Step 6: Final answer
    x = 13,085.30

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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.