Home / 20,115.92-27,710.40-17,122.16

Finding the Fourth Proportional to 20,115.92, 27,710.40 and 17,122.16

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Solution

The fourth proportional to 20,115.92, 27,710.40 and 17,122.16 is: 23,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.92 : 27,710.40 = 17,122.16 : x
  2. Step 2: Convert to fraction form
    20,115.92/27,710.40 = 17,122.16/x
  3. Step 3: Cross multiply
    20,115.92x = 27,710.40 × 17,122.16
  4. Step 4: Simplify right side
    20,115.92x = 474,461,902.46
  5. Step 5: Solve for x
    x = 474,461,902.46/20,115.92
  6. Step 6: Final answer
    x = 23,586.39

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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.