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Finding the Fourth Proportional to 18,503.70, 27,759.19 and 5,356.18

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Solution

The fourth proportional to 18,503.70, 27,759.19 and 5,356.18 is: 8,035.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.70 : 27,759.19 = 5,356.18 : x
  2. Step 2: Convert to fraction form
    18,503.70/27,759.19 = 5,356.18/x
  3. Step 3: Cross multiply
    18,503.70x = 27,759.19 × 5,356.18
  4. Step 4: Simplify right side
    18,503.70x = 148,683,218.29
  5. Step 5: Solve for x
    x = 148,683,218.29/18,503.70
  6. Step 6: Final answer
    x = 8,035.32

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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.