Home / 20,234.42-27,945.27-15,402.81

Finding the Fourth Proportional to 20,234.42, 27,945.27 and 15,402.81

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Solution

The fourth proportional to 20,234.42, 27,945.27 and 15,402.81 is: 21,272.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.42 : 27,945.27 = 15,402.81 : x
  2. Step 2: Convert to fraction form
    20,234.42/27,945.27 = 15,402.81/x
  3. Step 3: Cross multiply
    20,234.42x = 27,945.27 × 15,402.81
  4. Step 4: Simplify right side
    20,234.42x = 430,435,684.21
  5. Step 5: Solve for x
    x = 430,435,684.21/20,234.42
  6. Step 6: Final answer
    x = 21,272.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.