Home / 21,112.76-31,673.64-6,322.88

Finding the Fourth Proportional to 21,112.76, 31,673.64 and 6,322.88

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Solution

The fourth proportional to 21,112.76, 31,673.64 and 6,322.88 is: 9,485.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.76 : 31,673.64 = 6,322.88 : x
  2. Step 2: Convert to fraction form
    21,112.76/31,673.64 = 6,322.88/x
  3. Step 3: Cross multiply
    21,112.76x = 31,673.64 × 6,322.88
  4. Step 4: Simplify right side
    21,112.76x = 200,268,624.88
  5. Step 5: Solve for x
    x = 200,268,624.88/21,112.76
  6. Step 6: Final answer
    x = 9,485.67

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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.