Home / 10,954.56-15,121.20-6,479.88

Finding the Fourth Proportional to 10,954.56, 15,121.20 and 6,479.88

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Solution

The fourth proportional to 10,954.56, 15,121.20 and 6,479.88 is: 8,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,954.56 : 15,121.20 = 6,479.88 : x
  2. Step 2: Convert to fraction form
    10,954.56/15,121.20 = 6,479.88/x
  3. Step 3: Cross multiply
    10,954.56x = 15,121.20 × 6,479.88
  4. Step 4: Simplify right side
    10,954.56x = 97,983,561.46
  5. Step 5: Solve for x
    x = 97,983,561.46/10,954.56
  6. Step 6: Final answer
    x = 8,944.55

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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.