Home / 10,998.28-15,189.06-8,453.80

Finding the Fourth Proportional to 10,998.28, 15,189.06 and 8,453.80

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Solution

The fourth proportional to 10,998.28, 15,189.06 and 8,453.80 is: 11,675.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.28 : 15,189.06 = 8,453.80 : x
  2. Step 2: Convert to fraction form
    10,998.28/15,189.06 = 8,453.80/x
  3. Step 3: Cross multiply
    10,998.28x = 15,189.06 × 8,453.80
  4. Step 4: Simplify right side
    10,998.28x = 128,405,275.43
  5. Step 5: Solve for x
    x = 128,405,275.43/10,998.28
  6. Step 6: Final answer
    x = 11,675.03

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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.