Home / 20,501.68-30,761.16-12,197.60

Finding the Fourth Proportional to 20,501.68, 30,761.16 and 12,197.60

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Solution

The fourth proportional to 20,501.68, 30,761.16 and 12,197.60 is: 18,301.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.68 : 30,761.16 = 12,197.60 : x
  2. Step 2: Convert to fraction form
    20,501.68/30,761.16 = 12,197.60/x
  3. Step 3: Cross multiply
    20,501.68x = 30,761.16 × 12,197.60
  4. Step 4: Simplify right side
    20,501.68x = 375,212,325.22
  5. Step 5: Solve for x
    x = 375,212,325.22/20,501.68
  6. Step 6: Final answer
    x = 18,301.54

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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.