Home / 27,731.08-38,268.92-15,155.84

Finding the Fourth Proportional to 27,731.08, 38,268.92 and 15,155.84

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Solution

The fourth proportional to 27,731.08, 38,268.92 and 15,155.84 is: 20,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.08 : 38,268.92 = 15,155.84 : x
  2. Step 2: Convert to fraction form
    27,731.08/38,268.92 = 15,155.84/x
  3. Step 3: Cross multiply
    27,731.08x = 38,268.92 × 15,155.84
  4. Step 4: Simplify right side
    27,731.08x = 579,997,628.49
  5. Step 5: Solve for x
    x = 579,997,628.49/27,731.08
  6. Step 6: Final answer
    x = 20,915.08

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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.