Home / 15,839.18-21,838.20-10,163.90

Finding the Fourth Proportional to 15,839.18, 21,838.20 and 10,163.90

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Solution

The fourth proportional to 15,839.18, 21,838.20 and 10,163.90 is: 14,013.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.18 : 21,838.20 = 10,163.90 : x
  2. Step 2: Convert to fraction form
    15,839.18/21,838.20 = 10,163.90/x
  3. Step 3: Cross multiply
    15,839.18x = 21,838.20 × 10,163.90
  4. Step 4: Simplify right side
    15,839.18x = 221,961,280.98
  5. Step 5: Solve for x
    x = 221,961,280.98/15,839.18
  6. Step 6: Final answer
    x = 14,013.43

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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.