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Finding the Fourth Proportional to 18,219.59, 27,287 and 17,588.21

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Solution

The fourth proportional to 18,219.59, 27,287 and 17,588.21 is: 26,341.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.59 : 27,287 = 17,588.21 : x
  2. Step 2: Convert to fraction form
    18,219.59/27,287 = 17,588.21/x
  3. Step 3: Cross multiply
    18,219.59x = 27,287 × 17,588.21
  4. Step 4: Simplify right side
    18,219.59x = 479,929,486.27
  5. Step 5: Solve for x
    x = 479,929,486.27/18,219.59
  6. Step 6: Final answer
    x = 26,341.41

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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.