Home / 13,318.80-18,383.40-9,793.68

Finding the Fourth Proportional to 13,318.80, 18,383.40 and 9,793.68

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Solution

The fourth proportional to 13,318.80, 18,383.40 and 9,793.68 is: 13,517.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.80 : 18,383.40 = 9,793.68 : x
  2. Step 2: Convert to fraction form
    13,318.80/18,383.40 = 9,793.68/x
  3. Step 3: Cross multiply
    13,318.80x = 18,383.40 × 9,793.68
  4. Step 4: Simplify right side
    13,318.80x = 180,041,136.91
  5. Step 5: Solve for x
    x = 180,041,136.91/13,318.80
  6. Step 6: Final answer
    x = 13,517.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.