Home / 13,345.44-18,419.52-7,680.96

Finding the Fourth Proportional to 13,345.44, 18,419.52 and 7,680.96

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Solution

The fourth proportional to 13,345.44, 18,419.52 and 7,680.96 is: 10,601.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.44 : 18,419.52 = 7,680.96 : x
  2. Step 2: Convert to fraction form
    13,345.44/18,419.52 = 7,680.96/x
  3. Step 3: Cross multiply
    13,345.44x = 18,419.52 × 7,680.96
  4. Step 4: Simplify right side
    13,345.44x = 141,479,596.34
  5. Step 5: Solve for x
    x = 141,479,596.34/13,345.44
  6. Step 6: Final answer
    x = 10,601.34

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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.