Home / 20,996.57-28,964.24-12,492.65

Finding the Fourth Proportional to 20,996.57, 28,964.24 and 12,492.65

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Solution

The fourth proportional to 20,996.57, 28,964.24 and 12,492.65 is: 17,233.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.57 : 28,964.24 = 12,492.65 : x
  2. Step 2: Convert to fraction form
    20,996.57/28,964.24 = 12,492.65/x
  3. Step 3: Cross multiply
    20,996.57x = 28,964.24 × 12,492.65
  4. Step 4: Simplify right side
    20,996.57x = 361,840,050.37
  5. Step 5: Solve for x
    x = 361,840,050.37/20,996.57
  6. Step 6: Final answer
    x = 17,233.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.