Home / 13,191.26-19,781.57-4,755.36

Finding the Fourth Proportional to 13,191.26, 19,781.57 and 4,755.36

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Solution

The fourth proportional to 13,191.26, 19,781.57 and 4,755.36 is: 7,131.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.26 : 19,781.57 = 4,755.36 : x
  2. Step 2: Convert to fraction form
    13,191.26/19,781.57 = 4,755.36/x
  3. Step 3: Cross multiply
    13,191.26x = 19,781.57 × 4,755.36
  4. Step 4: Simplify right side
    13,191.26x = 94,068,434.76
  5. Step 5: Solve for x
    x = 94,068,434.76/13,191.26
  6. Step 6: Final answer
    x = 7,131.12

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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.