Home / 21,193.18-31,800.09-8,716.94

Finding the Fourth Proportional to 21,193.18, 31,800.09 and 8,716.94

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Solution

The fourth proportional to 21,193.18, 31,800.09 and 8,716.94 is: 13,079.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.18 : 31,800.09 = 8,716.94 : x
  2. Step 2: Convert to fraction form
    21,193.18/31,800.09 = 8,716.94/x
  3. Step 3: Cross multiply
    21,193.18x = 31,800.09 × 8,716.94
  4. Step 4: Simplify right side
    21,193.18x = 277,199,476.52
  5. Step 5: Solve for x
    x = 277,199,476.52/21,193.18
  6. Step 6: Final answer
    x = 13,079.66

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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.