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Finding the Fourth Proportional to 18,688.70, 27,999.02 and 10,873.82

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Solution

The fourth proportional to 18,688.70, 27,999.02 and 10,873.82 is: 16,290.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.70 : 27,999.02 = 10,873.82 : x
  2. Step 2: Convert to fraction form
    18,688.70/27,999.02 = 10,873.82/x
  3. Step 3: Cross multiply
    18,688.70x = 27,999.02 × 10,873.82
  4. Step 4: Simplify right side
    18,688.70x = 304,456,303.66
  5. Step 5: Solve for x
    x = 304,456,303.66/18,688.70
  6. Step 6: Final answer
    x = 16,290.93

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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.