Home / 13,909.68-20,864.61-3,521.46

Finding the Fourth Proportional to 13,909.68, 20,864.61 and 3,521.46

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Solution

The fourth proportional to 13,909.68, 20,864.61 and 3,521.46 is: 5,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.68 : 20,864.61 = 3,521.46 : x
  2. Step 2: Convert to fraction form
    13,909.68/20,864.61 = 3,521.46/x
  3. Step 3: Cross multiply
    13,909.68x = 20,864.61 × 3,521.46
  4. Step 4: Simplify right side
    13,909.68x = 73,473,889.53
  5. Step 5: Solve for x
    x = 73,473,889.53/13,909.68
  6. Step 6: Final answer
    x = 5,282.21

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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.