Home / 13,608.12-18,781.70-7,946.22

Finding the Fourth Proportional to 13,608.12, 18,781.70 and 7,946.22

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Solution

The fourth proportional to 13,608.12, 18,781.70 and 7,946.22 is: 10,967.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.12 : 18,781.70 = 7,946.22 : x
  2. Step 2: Convert to fraction form
    13,608.12/18,781.70 = 7,946.22/x
  3. Step 3: Cross multiply
    13,608.12x = 18,781.70 × 7,946.22
  4. Step 4: Simplify right side
    13,608.12x = 149,243,480.44
  5. Step 5: Solve for x
    x = 149,243,480.44/13,608.12
  6. Step 6: Final answer
    x = 10,967.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.