Home / 15,936.50-21,995.16-12,153.80

Finding the Fourth Proportional to 15,936.50, 21,995.16 and 12,153.80

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Solution

The fourth proportional to 15,936.50, 21,995.16 and 12,153.80 is: 16,774.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.50 : 21,995.16 = 12,153.80 : x
  2. Step 2: Convert to fraction form
    15,936.50/21,995.16 = 12,153.80/x
  3. Step 3: Cross multiply
    15,936.50x = 21,995.16 × 12,153.80
  4. Step 4: Simplify right side
    15,936.50x = 267,324,775.61
  5. Step 5: Solve for x
    x = 267,324,775.61/15,936.50
  6. Step 6: Final answer
    x = 16,774.37

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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.