Home / 15,869.26-21,899.94-9,155.14

Finding the Fourth Proportional to 15,869.26, 21,899.94 and 9,155.14

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Solution

The fourth proportional to 15,869.26, 21,899.94 and 9,155.14 is: 12,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.26 : 21,899.94 = 9,155.14 : x
  2. Step 2: Convert to fraction form
    15,869.26/21,899.94 = 9,155.14/x
  3. Step 3: Cross multiply
    15,869.26x = 21,899.94 × 9,155.14
  4. Step 4: Simplify right side
    15,869.26x = 200,497,016.69
  5. Step 5: Solve for x
    x = 200,497,016.69/15,869.26
  6. Step 6: Final answer
    x = 12,634.30

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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.