Home / 27,888.27-38,485.60-15,141.20

Finding the Fourth Proportional to 27,888.27, 38,485.60 and 15,141.20

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Solution

The fourth proportional to 27,888.27, 38,485.60 and 15,141.20 is: 20,894.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.27 : 38,485.60 = 15,141.20 : x
  2. Step 2: Convert to fraction form
    27,888.27/38,485.60 = 15,141.20/x
  3. Step 3: Cross multiply
    27,888.27x = 38,485.60 × 15,141.20
  4. Step 4: Simplify right side
    27,888.27x = 582,718,138.73
  5. Step 5: Solve for x
    x = 582,718,138.73/27,888.27
  6. Step 6: Final answer
    x = 20,894.74

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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.