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Finding the Fourth Proportional to 18,606.80, 27,907.92 and 6,916.88

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Solution

The fourth proportional to 18,606.80, 27,907.92 and 6,916.88 is: 10,374.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.80 : 27,907.92 = 6,916.88 : x
  2. Step 2: Convert to fraction form
    18,606.80/27,907.92 = 6,916.88/x
  3. Step 3: Cross multiply
    18,606.80x = 27,907.92 × 6,916.88
  4. Step 4: Simplify right side
    18,606.80x = 193,035,733.69
  5. Step 5: Solve for x
    x = 193,035,733.69/18,606.80
  6. Step 6: Final answer
    x = 10,374.47

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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.