Home / 13,115.92-19,662.90-5,330.20

Finding the Fourth Proportional to 13,115.92, 19,662.90 and 5,330.20

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Solution

The fourth proportional to 13,115.92, 19,662.90 and 5,330.20 is: 7,990.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.92 : 19,662.90 = 5,330.20 : x
  2. Step 2: Convert to fraction form
    13,115.92/19,662.90 = 5,330.20/x
  3. Step 3: Cross multiply
    13,115.92x = 19,662.90 × 5,330.20
  4. Step 4: Simplify right side
    13,115.92x = 104,807,189.58
  5. Step 5: Solve for x
    x = 104,807,189.58/13,115.92
  6. Step 6: Final answer
    x = 7,990.84

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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.