Home / 20,228.38-27,915.53-11,274.92

Finding the Fourth Proportional to 20,228.38, 27,915.53 and 11,274.92

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Solution

The fourth proportional to 20,228.38, 27,915.53 and 11,274.92 is: 15,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.38 : 27,915.53 = 11,274.92 : x
  2. Step 2: Convert to fraction form
    20,228.38/27,915.53 = 11,274.92/x
  3. Step 3: Cross multiply
    20,228.38x = 27,915.53 × 11,274.92
  4. Step 4: Simplify right side
    20,228.38x = 314,745,465.48
  5. Step 5: Solve for x
    x = 314,745,465.48/20,228.38
  6. Step 6: Final answer
    x = 15,559.60

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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.