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Finding the Fourth Proportional to 18,346.78, 27,501.48 and 7,238.20

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Solution

The fourth proportional to 18,346.78, 27,501.48 and 7,238.20 is: 10,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.78 : 27,501.48 = 7,238.20 : x
  2. Step 2: Convert to fraction form
    18,346.78/27,501.48 = 7,238.20/x
  3. Step 3: Cross multiply
    18,346.78x = 27,501.48 × 7,238.20
  4. Step 4: Simplify right side
    18,346.78x = 199,061,212.54
  5. Step 5: Solve for x
    x = 199,061,212.54/18,346.78
  6. Step 6: Final answer
    x = 10,849.93

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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.