Home / 20,453.06-30,679.64-6,221.66

Finding the Fourth Proportional to 20,453.06, 30,679.64 and 6,221.66

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Solution

The fourth proportional to 20,453.06, 30,679.64 and 6,221.66 is: 9,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.06 : 30,679.64 = 6,221.66 : x
  2. Step 2: Convert to fraction form
    20,453.06/30,679.64 = 6,221.66/x
  3. Step 3: Cross multiply
    20,453.06x = 30,679.64 × 6,221.66
  4. Step 4: Simplify right side
    20,453.06x = 190,878,104.50
  5. Step 5: Solve for x
    x = 190,878,104.50/20,453.06
  6. Step 6: Final answer
    x = 9,332.50

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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.