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Finding the Fourth Proportional to 12,159.84, 18,273.94 and 7,230.36

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Solution

The fourth proportional to 12,159.84, 18,273.94 and 7,230.36 is: 10,865.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.84 : 18,273.94 = 7,230.36 : x
  2. Step 2: Convert to fraction form
    12,159.84/18,273.94 = 7,230.36/x
  3. Step 3: Cross multiply
    12,159.84x = 18,273.94 × 7,230.36
  4. Step 4: Simplify right side
    12,159.84x = 132,127,164.82
  5. Step 5: Solve for x
    x = 132,127,164.82/12,159.84
  6. Step 6: Final answer
    x = 10,865.86

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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.