Home / 21,247.51-31,867.80-6,251.12

Finding the Fourth Proportional to 21,247.51, 31,867.80 and 6,251.12

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Solution

The fourth proportional to 21,247.51, 31,867.80 and 6,251.12 is: 9,375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.51 : 31,867.80 = 6,251.12 : x
  2. Step 2: Convert to fraction form
    21,247.51/31,867.80 = 6,251.12/x
  3. Step 3: Cross multiply
    21,247.51x = 31,867.80 × 6,251.12
  4. Step 4: Simplify right side
    21,247.51x = 199,209,561.44
  5. Step 5: Solve for x
    x = 199,209,561.44/21,247.51
  6. Step 6: Final answer
    x = 9,375.67

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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.