Home / 15,243.46-21,033.88-8,869.57

Finding the Fourth Proportional to 15,243.46, 21,033.88 and 8,869.57

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Solution

The fourth proportional to 15,243.46, 21,033.88 and 8,869.57 is: 12,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.46 : 21,033.88 = 8,869.57 : x
  2. Step 2: Convert to fraction form
    15,243.46/21,033.88 = 8,869.57/x
  3. Step 3: Cross multiply
    15,243.46x = 21,033.88 × 8,869.57
  4. Step 4: Simplify right side
    15,243.46x = 186,561,471.03
  5. Step 5: Solve for x
    x = 186,561,471.03/15,243.46
  6. Step 6: Final answer
    x = 12,238.79

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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.