Home / 27,785.54-38,344.11-15,211.10

Finding the Fourth Proportional to 27,785.54, 38,344.11 and 15,211.10

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Solution

The fourth proportional to 27,785.54, 38,344.11 and 15,211.10 is: 20,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.54 : 38,344.11 = 15,211.10 : x
  2. Step 2: Convert to fraction form
    27,785.54/38,344.11 = 15,211.10/x
  3. Step 3: Cross multiply
    27,785.54x = 38,344.11 × 15,211.10
  4. Step 4: Simplify right side
    27,785.54x = 583,256,091.62
  5. Step 5: Solve for x
    x = 583,256,091.62/27,785.54
  6. Step 6: Final answer
    x = 20,991.35

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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.