Home / 13,115.72-19,670.28-3,755.80

Finding the Fourth Proportional to 13,115.72, 19,670.28 and 3,755.80

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Solution

The fourth proportional to 13,115.72, 19,670.28 and 3,755.80 is: 5,632.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.72 : 19,670.28 = 3,755.80 : x
  2. Step 2: Convert to fraction form
    13,115.72/19,670.28 = 3,755.80/x
  3. Step 3: Cross multiply
    13,115.72x = 19,670.28 × 3,755.80
  4. Step 4: Simplify right side
    13,115.72x = 73,877,648.13
  5. Step 5: Solve for x
    x = 73,877,648.13/13,115.72
  6. Step 6: Final answer
    x = 5,632.75

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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.