Home / 19,540.56-29,298.96-7,680.12

Finding the Fourth Proportional to 19,540.56, 29,298.96 and 7,680.12

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Solution

The fourth proportional to 19,540.56, 29,298.96 and 7,680.12 is: 11,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.56 : 29,298.96 = 7,680.12 : x
  2. Step 2: Convert to fraction form
    19,540.56/29,298.96 = 7,680.12/x
  3. Step 3: Cross multiply
    19,540.56x = 29,298.96 × 7,680.12
  4. Step 4: Simplify right side
    19,540.56x = 225,019,528.68
  5. Step 5: Solve for x
    x = 225,019,528.68/19,540.56
  6. Step 6: Final answer
    x = 11,515.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.