Home / 27,731.11-38,268.93-15,155.86

Finding the Fourth Proportional to 27,731.11, 38,268.93 and 15,155.86

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Solution

The fourth proportional to 27,731.11, 38,268.93 and 15,155.86 is: 20,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.11 : 38,268.93 = 15,155.86 : x
  2. Step 2: Convert to fraction form
    27,731.11/38,268.93 = 15,155.86/x
  3. Step 3: Cross multiply
    27,731.11x = 38,268.93 × 15,155.86
  4. Step 4: Simplify right side
    27,731.11x = 579,998,535.72
  5. Step 5: Solve for x
    x = 579,998,535.72/27,731.11
  6. Step 6: Final answer
    x = 20,915.09

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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.