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Finding the Fourth Proportional to 18,752.84, 28,169.40 and 11,360.84

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Solution

The fourth proportional to 18,752.84, 28,169.40 and 11,360.84 is: 17,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.84 : 28,169.40 = 11,360.84 : x
  2. Step 2: Convert to fraction form
    18,752.84/28,169.40 = 11,360.84/x
  3. Step 3: Cross multiply
    18,752.84x = 28,169.40 × 11,360.84
  4. Step 4: Simplify right side
    18,752.84x = 320,028,046.30
  5. Step 5: Solve for x
    x = 320,028,046.30/18,752.84
  6. Step 6: Final answer
    x = 17,065.58

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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.