Home / 20,282.65-27,989.76-11,330.28

Finding the Fourth Proportional to 20,282.65, 27,989.76 and 11,330.28

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Solution

The fourth proportional to 20,282.65, 27,989.76 and 11,330.28 is: 15,635.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.65 : 27,989.76 = 11,330.28 : x
  2. Step 2: Convert to fraction form
    20,282.65/27,989.76 = 11,330.28/x
  3. Step 3: Cross multiply
    20,282.65x = 27,989.76 × 11,330.28
  4. Step 4: Simplify right side
    20,282.65x = 317,131,817.93
  5. Step 5: Solve for x
    x = 317,131,817.93/20,282.65
  6. Step 6: Final answer
    x = 15,635.62

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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.