Home / 13,617.60-20,426.40-8,672.55

Finding the Fourth Proportional to 13,617.60, 20,426.40 and 8,672.55

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Solution

The fourth proportional to 13,617.60, 20,426.40 and 8,672.55 is: 13,008.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.60 : 20,426.40 = 8,672.55 : x
  2. Step 2: Convert to fraction form
    13,617.60/20,426.40 = 8,672.55/x
  3. Step 3: Cross multiply
    13,617.60x = 20,426.40 × 8,672.55
  4. Step 4: Simplify right side
    13,617.60x = 177,148,975.32
  5. Step 5: Solve for x
    x = 177,148,975.32/13,617.60
  6. Step 6: Final answer
    x = 13,008.83

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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.