Home / 20,949.04-28,909.68-11,518.24

Finding the Fourth Proportional to 20,949.04, 28,909.68 and 11,518.24

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Solution

The fourth proportional to 20,949.04, 28,909.68 and 11,518.24 is: 15,895.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.04 : 28,909.68 = 11,518.24 : x
  2. Step 2: Convert to fraction form
    20,949.04/28,909.68 = 11,518.24/x
  3. Step 3: Cross multiply
    20,949.04x = 28,909.68 × 11,518.24
  4. Step 4: Simplify right side
    20,949.04x = 332,988,632.56
  5. Step 5: Solve for x
    x = 332,988,632.56/20,949.04
  6. Step 6: Final answer
    x = 15,895.17

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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.