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Finding the Fourth Proportional to 18,345.60, 27,532.80 and 8,486.10

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Solution

The fourth proportional to 18,345.60, 27,532.80 and 8,486.10 is: 12,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.60 : 27,532.80 = 8,486.10 : x
  2. Step 2: Convert to fraction form
    18,345.60/27,532.80 = 8,486.10/x
  3. Step 3: Cross multiply
    18,345.60x = 27,532.80 × 8,486.10
  4. Step 4: Simplify right side
    18,345.60x = 233,646,094.08
  5. Step 5: Solve for x
    x = 233,646,094.08/18,345.60
  6. Step 6: Final answer
    x = 12,735.81

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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.