Home / 13,582.92-20,380.50-8,651.28

Finding the Fourth Proportional to 13,582.92, 20,380.50 and 8,651.28

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Solution

The fourth proportional to 13,582.92, 20,380.50 and 8,651.28 is: 12,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.92 : 20,380.50 = 8,651.28 : x
  2. Step 2: Convert to fraction form
    13,582.92/20,380.50 = 8,651.28/x
  3. Step 3: Cross multiply
    13,582.92x = 20,380.50 × 8,651.28
  4. Step 4: Simplify right side
    13,582.92x = 176,317,412.04
  5. Step 5: Solve for x
    x = 176,317,412.04/13,582.92
  6. Step 6: Final answer
    x = 12,980.82

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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.