Home / 13,909.72-20,864.62-3,521.46

Finding the Fourth Proportional to 13,909.72, 20,864.62 and 3,521.46

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Solution

The fourth proportional to 13,909.72, 20,864.62 and 3,521.46 is: 5,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.72 : 20,864.62 = 3,521.46 : x
  2. Step 2: Convert to fraction form
    13,909.72/20,864.62 = 3,521.46/x
  3. Step 3: Cross multiply
    13,909.72x = 20,864.62 × 3,521.46
  4. Step 4: Simplify right side
    13,909.72x = 73,473,924.75
  5. Step 5: Solve for x
    x = 73,473,924.75/13,909.72
  6. Step 6: Final answer
    x = 5,282.20

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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.