Home / 21,185.06-31,785.95-8,040.92

Finding the Fourth Proportional to 21,185.06, 31,785.95 and 8,040.92

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Solution

The fourth proportional to 21,185.06, 31,785.95 and 8,040.92 is: 12,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.06 : 31,785.95 = 8,040.92 : x
  2. Step 2: Convert to fraction form
    21,185.06/31,785.95 = 8,040.92/x
  3. Step 3: Cross multiply
    21,185.06x = 31,785.95 × 8,040.92
  4. Step 4: Simplify right side
    21,185.06x = 255,588,142.25
  5. Step 5: Solve for x
    x = 255,588,142.25/21,185.06
  6. Step 6: Final answer
    x = 12,064.55

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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.