Home / 20,972.62-28,942.42-11,541.40

Finding the Fourth Proportional to 20,972.62, 28,942.42 and 11,541.40

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Solution

The fourth proportional to 20,972.62, 28,942.42 and 11,541.40 is: 15,927.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.62 : 28,942.42 = 11,541.40 : x
  2. Step 2: Convert to fraction form
    20,972.62/28,942.42 = 11,541.40/x
  3. Step 3: Cross multiply
    20,972.62x = 28,942.42 × 11,541.40
  4. Step 4: Simplify right side
    20,972.62x = 334,036,046.19
  5. Step 5: Solve for x
    x = 334,036,046.19/20,972.62
  6. Step 6: Final answer
    x = 15,927.24

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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.