Home / 21,866.88-30,176.96-12,436.80

Finding the Fourth Proportional to 21,866.88, 30,176.96 and 12,436.80

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Solution

The fourth proportional to 21,866.88, 30,176.96 and 12,436.80 is: 17,163.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.88 : 30,176.96 = 12,436.80 : x
  2. Step 2: Convert to fraction form
    21,866.88/30,176.96 = 12,436.80/x
  3. Step 3: Cross multiply
    21,866.88x = 30,176.96 × 12,436.80
  4. Step 4: Simplify right side
    21,866.88x = 375,304,816.13
  5. Step 5: Solve for x
    x = 375,304,816.13/21,866.88
  6. Step 6: Final answer
    x = 17,163.16

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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.