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Finding the Fourth Proportional to 18,329.32, 27,498.03 and 6,643.45

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Solution

The fourth proportional to 18,329.32, 27,498.03 and 6,643.45 is: 9,966.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.32 : 27,498.03 = 6,643.45 : x
  2. Step 2: Convert to fraction form
    18,329.32/27,498.03 = 6,643.45/x
  3. Step 3: Cross multiply
    18,329.32x = 27,498.03 × 6,643.45
  4. Step 4: Simplify right side
    18,329.32x = 182,681,787.40
  5. Step 5: Solve for x
    x = 182,681,787.40/18,329.32
  6. Step 6: Final answer
    x = 9,966.64

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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.