Home / 20,308.42-30,462.43-15,408.12

Finding the Fourth Proportional to 20,308.42, 30,462.43 and 15,408.12

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Solution

The fourth proportional to 20,308.42, 30,462.43 and 15,408.12 is: 23,112.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.42 : 30,462.43 = 15,408.12 : x
  2. Step 2: Convert to fraction form
    20,308.42/30,462.43 = 15,408.12/x
  3. Step 3: Cross multiply
    20,308.42x = 30,462.43 × 15,408.12
  4. Step 4: Simplify right side
    20,308.42x = 469,368,881.54
  5. Step 5: Solve for x
    x = 469,368,881.54/20,308.42
  6. Step 6: Final answer
    x = 23,112.03

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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.