Home / 21,163.54-31,744.98-5,153.22

Finding the Fourth Proportional to 21,163.54, 31,744.98 and 5,153.22

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Solution

The fourth proportional to 21,163.54, 31,744.98 and 5,153.22 is: 7,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.54 : 31,744.98 = 5,153.22 : x
  2. Step 2: Convert to fraction form
    21,163.54/31,744.98 = 5,153.22/x
  3. Step 3: Cross multiply
    21,163.54x = 31,744.98 × 5,153.22
  4. Step 4: Simplify right side
    21,163.54x = 163,588,969.61
  5. Step 5: Solve for x
    x = 163,588,969.61/21,163.54
  6. Step 6: Final answer
    x = 7,729.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.