Home / 27,739.72-38,282-15,165.28

Finding the Fourth Proportional to 27,739.72, 38,282 and 15,165.28

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Solution

The fourth proportional to 27,739.72, 38,282 and 15,165.28 is: 20,928.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.72 : 38,282 = 15,165.28 : x
  2. Step 2: Convert to fraction form
    27,739.72/38,282 = 15,165.28/x
  3. Step 3: Cross multiply
    27,739.72x = 38,282 × 15,165.28
  4. Step 4: Simplify right side
    27,739.72x = 580,557,248.96
  5. Step 5: Solve for x
    x = 580,557,248.96/27,739.72
  6. Step 6: Final answer
    x = 20,928.74

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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.