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Finding the Fourth Proportional to 18,486.20, 27,746.70 and 9,727.40

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Solution

The fourth proportional to 18,486.20, 27,746.70 and 9,727.40 is: 14,600.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.20 : 27,746.70 = 9,727.40 : x
  2. Step 2: Convert to fraction form
    18,486.20/27,746.70 = 9,727.40/x
  3. Step 3: Cross multiply
    18,486.20x = 27,746.70 × 9,727.40
  4. Step 4: Simplify right side
    18,486.20x = 269,903,249.58
  5. Step 5: Solve for x
    x = 269,903,249.58/18,486.20
  6. Step 6: Final answer
    x = 14,600.26

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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.