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Finding the Fourth Proportional to 18,507.76, 27,761.60 and 5,360.12

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Solution

The fourth proportional to 18,507.76, 27,761.60 and 5,360.12 is: 8,040.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.76 : 27,761.60 = 5,360.12 : x
  2. Step 2: Convert to fraction form
    18,507.76/27,761.60 = 5,360.12/x
  3. Step 3: Cross multiply
    18,507.76x = 27,761.60 × 5,360.12
  4. Step 4: Simplify right side
    18,507.76x = 148,805,507.39
  5. Step 5: Solve for x
    x = 148,805,507.39/18,507.76
  6. Step 6: Final answer
    x = 8,040.17

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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.