Home / 13,565.10-20,345.70-5,249.04

Finding the Fourth Proportional to 13,565.10, 20,345.70 and 5,249.04

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Solution

The fourth proportional to 13,565.10, 20,345.70 and 5,249.04 is: 7,872.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.10 : 20,345.70 = 5,249.04 : x
  2. Step 2: Convert to fraction form
    13,565.10/20,345.70 = 5,249.04/x
  3. Step 3: Cross multiply
    13,565.10x = 20,345.70 × 5,249.04
  4. Step 4: Simplify right side
    13,565.10x = 106,795,393.13
  5. Step 5: Solve for x
    x = 106,795,393.13/13,565.10
  6. Step 6: Final answer
    x = 7,872.81

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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.