Home / 21,277.04-31,912.22-8,126.49

Finding the Fourth Proportional to 21,277.04, 31,912.22 and 8,126.49

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Solution

The fourth proportional to 21,277.04, 31,912.22 and 8,126.49 is: 12,188.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.04 : 31,912.22 = 8,126.49 : x
  2. Step 2: Convert to fraction form
    21,277.04/31,912.22 = 8,126.49/x
  3. Step 3: Cross multiply
    21,277.04x = 31,912.22 × 8,126.49
  4. Step 4: Simplify right side
    21,277.04x = 259,334,336.71
  5. Step 5: Solve for x
    x = 259,334,336.71/21,277.04
  6. Step 6: Final answer
    x = 12,188.46

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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.