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Finding the Fourth Proportional to 18,356.28, 27,518.82 and 7,270.77

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Solution

The fourth proportional to 18,356.28, 27,518.82 and 7,270.77 is: 10,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.28 : 27,518.82 = 7,270.77 : x
  2. Step 2: Convert to fraction form
    18,356.28/27,518.82 = 7,270.77/x
  3. Step 3: Cross multiply
    18,356.28x = 27,518.82 × 7,270.77
  4. Step 4: Simplify right side
    18,356.28x = 200,083,010.89
  5. Step 5: Solve for x
    x = 200,083,010.89/18,356.28
  6. Step 6: Final answer
    x = 10,899.98

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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.