Home / 20,972.04-28,941.30-11,540.04

Finding the Fourth Proportional to 20,972.04, 28,941.30 and 11,540.04

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Solution

The fourth proportional to 20,972.04, 28,941.30 and 11,540.04 is: 15,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.04 : 28,941.30 = 11,540.04 : x
  2. Step 2: Convert to fraction form
    20,972.04/28,941.30 = 11,540.04/x
  3. Step 3: Cross multiply
    20,972.04x = 28,941.30 × 11,540.04
  4. Step 4: Simplify right side
    20,972.04x = 333,983,759.65
  5. Step 5: Solve for x
    x = 333,983,759.65/20,972.04
  6. Step 6: Final answer
    x = 15,925.19

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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.