Home / 20,228.13-27,915.03-11,276.42

Finding the Fourth Proportional to 20,228.13, 27,915.03 and 11,276.42

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Solution

The fourth proportional to 20,228.13, 27,915.03 and 11,276.42 is: 15,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.13 : 27,915.03 = 11,276.42 : x
  2. Step 2: Convert to fraction form
    20,228.13/27,915.03 = 11,276.42/x
  3. Step 3: Cross multiply
    20,228.13x = 27,915.03 × 11,276.42
  4. Step 4: Simplify right side
    20,228.13x = 314,781,463.02
  5. Step 5: Solve for x
    x = 314,781,463.02/20,228.13
  6. Step 6: Final answer
    x = 15,561.57

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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.