Home / 21,997.46-30,356.12-12,437.20

Finding the Fourth Proportional to 21,997.46, 30,356.12 and 12,437.20

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Solution

The fourth proportional to 21,997.46, 30,356.12 and 12,437.20 is: 17,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.46 : 30,356.12 = 12,437.20 : x
  2. Step 2: Convert to fraction form
    21,997.46/30,356.12 = 12,437.20/x
  3. Step 3: Cross multiply
    21,997.46x = 30,356.12 × 12,437.20
  4. Step 4: Simplify right side
    21,997.46x = 377,545,135.66
  5. Step 5: Solve for x
    x = 377,545,135.66/21,997.46
  6. Step 6: Final answer
    x = 17,163.12

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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.