Home / 11,330.40-15,600.96-9,418.80

Finding the Fourth Proportional to 11,330.40, 15,600.96 and 9,418.80

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Solution

The fourth proportional to 11,330.40, 15,600.96 and 9,418.80 is: 12,968.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,330.40 : 15,600.96 = 9,418.80 : x
  2. Step 2: Convert to fraction form
    11,330.40/15,600.96 = 9,418.80/x
  3. Step 3: Cross multiply
    11,330.40x = 15,600.96 × 9,418.80
  4. Step 4: Simplify right side
    11,330.40x = 146,942,322.05
  5. Step 5: Solve for x
    x = 146,942,322.05/11,330.40
  6. Step 6: Final answer
    x = 12,968.86

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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.