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Finding the Fourth Proportional to 41,290.12, 61,939.29 and 13,203.12

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Solution

The fourth proportional to 41,290.12, 61,939.29 and 13,203.12 is: 19,805.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,290.12 : 61,939.29 = 13,203.12 : x
  2. Step 2: Convert to fraction form
    41,290.12/61,939.29 = 13,203.12/x
  3. Step 3: Cross multiply
    41,290.12x = 61,939.29 × 13,203.12
  4. Step 4: Simplify right side
    41,290.12x = 817,791,835.85
  5. Step 5: Solve for x
    x = 817,791,835.85/41,290.12
  6. Step 6: Final answer
    x = 19,805.99

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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.