Home / 13,909.74-20,864.61-3,521.22

Finding the Fourth Proportional to 13,909.74, 20,864.61 and 3,521.22

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Solution

The fourth proportional to 13,909.74, 20,864.61 and 3,521.22 is: 5,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.74 : 20,864.61 = 3,521.22 : x
  2. Step 2: Convert to fraction form
    13,909.74/20,864.61 = 3,521.22/x
  3. Step 3: Cross multiply
    13,909.74x = 20,864.61 × 3,521.22
  4. Step 4: Simplify right side
    13,909.74x = 73,468,882.02
  5. Step 5: Solve for x
    x = 73,468,882.02/13,909.74
  6. Step 6: Final answer
    x = 5,281.83

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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.