Home / 18,071.02-27,109.05-8,212.78

Finding the Fourth Proportional to 18,071.02, 27,109.05 and 8,212.78

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Solution

The fourth proportional to 18,071.02, 27,109.05 and 8,212.78 is: 12,320.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,071.02 : 27,109.05 = 8,212.78 : x
  2. Step 2: Convert to fraction form
    18,071.02/27,109.05 = 8,212.78/x
  3. Step 3: Cross multiply
    18,071.02x = 27,109.05 × 8,212.78
  4. Step 4: Simplify right side
    18,071.02x = 222,640,663.66
  5. Step 5: Solve for x
    x = 222,640,663.66/18,071.02
  6. Step 6: Final answer
    x = 12,320.32

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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.