Home / 21,187.44-31,781.16-8,036.69

Finding the Fourth Proportional to 21,187.44, 31,781.16 and 8,036.69

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Solution

The fourth proportional to 21,187.44, 31,781.16 and 8,036.69 is: 12,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.44 : 31,781.16 = 8,036.69 : x
  2. Step 2: Convert to fraction form
    21,187.44/31,781.16 = 8,036.69/x
  3. Step 3: Cross multiply
    21,187.44x = 31,781.16 × 8,036.69
  4. Step 4: Simplify right side
    21,187.44x = 255,415,171.85
  5. Step 5: Solve for x
    x = 255,415,171.85/21,187.44
  6. Step 6: Final answer
    x = 12,055.03

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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.