Home / 13,909.28-20,836.13-8,359.62

Finding the Fourth Proportional to 13,909.28, 20,836.13 and 8,359.62

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Solution

The fourth proportional to 13,909.28, 20,836.13 and 8,359.62 is: 12,522.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.28 : 20,836.13 = 8,359.62 : x
  2. Step 2: Convert to fraction form
    13,909.28/20,836.13 = 8,359.62/x
  3. Step 3: Cross multiply
    13,909.28x = 20,836.13 × 8,359.62
  4. Step 4: Simplify right side
    13,909.28x = 174,182,129.07
  5. Step 5: Solve for x
    x = 174,182,129.07/13,909.28
  6. Step 6: Final answer
    x = 12,522.73

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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.