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Finding the Fourth Proportional to 18,360.74, 27,541.06 and 5,213.12

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Solution

The fourth proportional to 18,360.74, 27,541.06 and 5,213.12 is: 7,819.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.74 : 27,541.06 = 5,213.12 : x
  2. Step 2: Convert to fraction form
    18,360.74/27,541.06 = 5,213.12/x
  3. Step 3: Cross multiply
    18,360.74x = 27,541.06 × 5,213.12
  4. Step 4: Simplify right side
    18,360.74x = 143,574,850.71
  5. Step 5: Solve for x
    x = 143,574,850.71/18,360.74
  6. Step 6: Final answer
    x = 7,819.67

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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.