Home / 13,818.60-20,727.90-8,569.80

Finding the Fourth Proportional to 13,818.60, 20,727.90 and 8,569.80

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Solution

The fourth proportional to 13,818.60, 20,727.90 and 8,569.80 is: 12,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.60 : 20,727.90 = 8,569.80 : x
  2. Step 2: Convert to fraction form
    13,818.60/20,727.90 = 8,569.80/x
  3. Step 3: Cross multiply
    13,818.60x = 20,727.90 × 8,569.80
  4. Step 4: Simplify right side
    13,818.60x = 177,633,957.42
  5. Step 5: Solve for x
    x = 177,633,957.42/13,818.60
  6. Step 6: Final answer
    x = 12,854.70

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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.