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Finding the Fourth Proportional to 18,360.74, 27,541.05 and 5,213.13

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Solution

The fourth proportional to 18,360.74, 27,541.05 and 5,213.13 is: 7,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.74 : 27,541.05 = 5,213.13 : x
  2. Step 2: Convert to fraction form
    18,360.74/27,541.05 = 5,213.13/x
  3. Step 3: Cross multiply
    18,360.74x = 27,541.05 × 5,213.13
  4. Step 4: Simplify right side
    18,360.74x = 143,575,073.99
  5. Step 5: Solve for x
    x = 143,575,073.99/18,360.74
  6. Step 6: Final answer
    x = 7,819.68

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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.