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Finding the Fourth Proportional to 18,473.20, 27,727.20 and 9,714.40

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Solution

The fourth proportional to 18,473.20, 27,727.20 and 9,714.40 is: 14,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.20 : 27,727.20 = 9,714.40 : x
  2. Step 2: Convert to fraction form
    18,473.20/27,727.20 = 9,714.40/x
  3. Step 3: Cross multiply
    18,473.20x = 27,727.20 × 9,714.40
  4. Step 4: Simplify right side
    18,473.20x = 269,353,111.68
  5. Step 5: Solve for x
    x = 269,353,111.68/18,473.20
  6. Step 6: Final answer
    x = 14,580.75

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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.