Home / 11,120.40-16,648.20-7,426.80

Finding the Fourth Proportional to 11,120.40, 16,648.20 and 7,426.80

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Solution

The fourth proportional to 11,120.40, 16,648.20 and 7,426.80 is: 11,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.40 : 16,648.20 = 7,426.80 : x
  2. Step 2: Convert to fraction form
    11,120.40/16,648.20 = 7,426.80/x
  3. Step 3: Cross multiply
    11,120.40x = 16,648.20 × 7,426.80
  4. Step 4: Simplify right side
    11,120.40x = 123,642,851.76
  5. Step 5: Solve for x
    x = 123,642,851.76/11,120.40
  6. Step 6: Final answer
    x = 11,118.56

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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.