Home / 21,187.32-31,762.68-8,049.12

Finding the Fourth Proportional to 21,187.32, 31,762.68 and 8,049.12

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Solution

The fourth proportional to 21,187.32, 31,762.68 and 8,049.12 is: 12,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.32 : 31,762.68 = 8,049.12 : x
  2. Step 2: Convert to fraction form
    21,187.32/31,762.68 = 8,049.12/x
  3. Step 3: Cross multiply
    21,187.32x = 31,762.68 × 8,049.12
  4. Step 4: Simplify right side
    21,187.32x = 255,661,622.84
  5. Step 5: Solve for x
    x = 255,661,622.84/21,187.32
  6. Step 6: Final answer
    x = 12,066.73

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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.