Home / 9,955.32-13,738.19-5,478.95

Finding the Fourth Proportional to 9,955.32, 13,738.19 and 5,478.95

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Solution

The fourth proportional to 9,955.32, 13,738.19 and 5,478.95 is: 7,560.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,955.32 : 13,738.19 = 5,478.95 : x
  2. Step 2: Convert to fraction form
    9,955.32/13,738.19 = 5,478.95/x
  3. Step 3: Cross multiply
    9,955.32x = 13,738.19 × 5,478.95
  4. Step 4: Simplify right side
    9,955.32x = 75,270,863.05
  5. Step 5: Solve for x
    x = 75,270,863.05/9,955.32
  6. Step 6: Final answer
    x = 7,560.87

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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.