Home / 20,236.56-30,266.10-12,317.22

Finding the Fourth Proportional to 20,236.56, 30,266.10 and 12,317.22

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Solution

The fourth proportional to 20,236.56, 30,266.10 and 12,317.22 is: 18,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,236.56 : 30,266.10 = 12,317.22 : x
  2. Step 2: Convert to fraction form
    20,236.56/30,266.10 = 12,317.22/x
  3. Step 3: Cross multiply
    20,236.56x = 30,266.10 × 12,317.22
  4. Step 4: Simplify right side
    20,236.56x = 372,794,212.24
  5. Step 5: Solve for x
    x = 372,794,212.24/20,236.56
  6. Step 6: Final answer
    x = 18,421.82

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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.