Home / 27,876.15-38,468.79-15,129.32

Finding the Fourth Proportional to 27,876.15, 38,468.79 and 15,129.32

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Solution

The fourth proportional to 27,876.15, 38,468.79 and 15,129.32 is: 20,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.15 : 38,468.79 = 15,129.32 : x
  2. Step 2: Convert to fraction form
    27,876.15/38,468.79 = 15,129.32/x
  3. Step 3: Cross multiply
    27,876.15x = 38,468.79 × 15,129.32
  4. Step 4: Simplify right side
    27,876.15x = 582,006,441.58
  5. Step 5: Solve for x
    x = 582,006,441.58/27,876.15
  6. Step 6: Final answer
    x = 20,878.29

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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.