Home / 12,806.28-19,196.22-9,287.49

Finding the Fourth Proportional to 12,806.28, 19,196.22 and 9,287.49

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Solution

The fourth proportional to 12,806.28, 19,196.22 and 9,287.49 is: 13,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.28 : 19,196.22 = 9,287.49 : x
  2. Step 2: Convert to fraction form
    12,806.28/19,196.22 = 9,287.49/x
  3. Step 3: Cross multiply
    12,806.28x = 19,196.22 × 9,287.49
  4. Step 4: Simplify right side
    12,806.28x = 178,284,701.29
  5. Step 5: Solve for x
    x = 178,284,701.29/12,806.28
  6. Step 6: Final answer
    x = 13,921.66

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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.