Home / 12,343.40-18,515.10-10,836.80

Finding the Fourth Proportional to 12,343.40, 18,515.10 and 10,836.80

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Solution

The fourth proportional to 12,343.40, 18,515.10 and 10,836.80 is: 16,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.40 : 18,515.10 = 10,836.80 : x
  2. Step 2: Convert to fraction form
    12,343.40/18,515.10 = 10,836.80/x
  3. Step 3: Cross multiply
    12,343.40x = 18,515.10 × 10,836.80
  4. Step 4: Simplify right side
    12,343.40x = 200,644,435.68
  5. Step 5: Solve for x
    x = 200,644,435.68/12,343.40
  6. Step 6: Final answer
    x = 16,255.20

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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.