Home / 12,747.40-19,121.10-4,436.80

Finding the Fourth Proportional to 12,747.40, 19,121.10 and 4,436.80

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Solution

The fourth proportional to 12,747.40, 19,121.10 and 4,436.80 is: 6,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.40 : 19,121.10 = 4,436.80 : x
  2. Step 2: Convert to fraction form
    12,747.40/19,121.10 = 4,436.80/x
  3. Step 3: Cross multiply
    12,747.40x = 19,121.10 × 4,436.80
  4. Step 4: Simplify right side
    12,747.40x = 84,836,496.48
  5. Step 5: Solve for x
    x = 84,836,496.48/12,747.40
  6. Step 6: Final answer
    x = 6,655.20

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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.