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Finding the Fourth Proportional to 18,293.40, 27,432 and 6,606.72

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Solution

The fourth proportional to 18,293.40, 27,432 and 6,606.72 is: 9,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.40 : 27,432 = 6,606.72 : x
  2. Step 2: Convert to fraction form
    18,293.40/27,432 = 6,606.72/x
  3. Step 3: Cross multiply
    18,293.40x = 27,432 × 6,606.72
  4. Step 4: Simplify right side
    18,293.40x = 181,235,543.04
  5. Step 5: Solve for x
    x = 181,235,543.04/18,293.40
  6. Step 6: Final answer
    x = 9,907.15

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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.