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Finding the Fourth Proportional to 18,569.84, 27,851.28 and 5,239.55

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Solution

The fourth proportional to 18,569.84, 27,851.28 and 5,239.55 is: 7,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.84 : 27,851.28 = 5,239.55 : x
  2. Step 2: Convert to fraction form
    18,569.84/27,851.28 = 5,239.55/x
  3. Step 3: Cross multiply
    18,569.84x = 27,851.28 × 5,239.55
  4. Step 4: Simplify right side
    18,569.84x = 145,928,034.87
  5. Step 5: Solve for x
    x = 145,928,034.87/18,569.84
  6. Step 6: Final answer
    x = 7,858.34

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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.