Home / 21,087.84-31,607.16-11,723.38

Finding the Fourth Proportional to 21,087.84, 31,607.16 and 11,723.38

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Solution

The fourth proportional to 21,087.84, 31,607.16 and 11,723.38 is: 17,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.84 : 31,607.16 = 11,723.38 : x
  2. Step 2: Convert to fraction form
    21,087.84/31,607.16 = 11,723.38/x
  3. Step 3: Cross multiply
    21,087.84x = 31,607.16 × 11,723.38
  4. Step 4: Simplify right side
    21,087.84x = 370,542,868.15
  5. Step 5: Solve for x
    x = 370,542,868.15/21,087.84
  6. Step 6: Final answer
    x = 17,571.40

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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.