Home / 42,408.14-63,515.32-20,237.09

Finding the Fourth Proportional to 42,408.14, 63,515.32 and 20,237.09

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Solution

The fourth proportional to 42,408.14, 63,515.32 and 20,237.09 is: 30,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,408.14 : 63,515.32 = 20,237.09 : x
  2. Step 2: Convert to fraction form
    42,408.14/63,515.32 = 20,237.09/x
  3. Step 3: Cross multiply
    42,408.14x = 63,515.32 × 20,237.09
  4. Step 4: Simplify right side
    42,408.14x = 1,285,365,247.22
  5. Step 5: Solve for x
    x = 1,285,365,247.22/42,408.14
  6. Step 6: Final answer
    x = 30,309.40

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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.