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Finding the Fourth Proportional to 18,239.92, 27,368.48 and 9,919.60

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Solution

The fourth proportional to 18,239.92, 27,368.48 and 9,919.60 is: 14,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,239.92 : 27,368.48 = 9,919.60 : x
  2. Step 2: Convert to fraction form
    18,239.92/27,368.48 = 9,919.60/x
  3. Step 3: Cross multiply
    18,239.92x = 27,368.48 × 9,919.60
  4. Step 4: Simplify right side
    18,239.92x = 271,484,374.21
  5. Step 5: Solve for x
    x = 271,484,374.21/18,239.92
  6. Step 6: Final answer
    x = 14,884.08

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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.