Home / 13,478.42-20,206.82-9,040.70

Finding the Fourth Proportional to 13,478.42, 20,206.82 and 9,040.70

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Solution

The fourth proportional to 13,478.42, 20,206.82 and 9,040.70 is: 13,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.42 : 20,206.82 = 9,040.70 : x
  2. Step 2: Convert to fraction form
    13,478.42/20,206.82 = 9,040.70/x
  3. Step 3: Cross multiply
    13,478.42x = 20,206.82 × 9,040.70
  4. Step 4: Simplify right side
    13,478.42x = 182,683,797.57
  5. Step 5: Solve for x
    x = 182,683,797.57/13,478.42
  6. Step 6: Final answer
    x = 13,553.80

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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.