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Finding the Fourth Proportional to 18,569.60, 27,879.12 and 10,784

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Solution

The fourth proportional to 18,569.60, 27,879.12 and 10,784 is: 16,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.60 : 27,879.12 = 10,784 : x
  2. Step 2: Convert to fraction form
    18,569.60/27,879.12 = 10,784/x
  3. Step 3: Cross multiply
    18,569.60x = 27,879.12 × 10,784
  4. Step 4: Simplify right side
    18,569.60x = 300,648,430.08
  5. Step 5: Solve for x
    x = 300,648,430.08/18,569.60
  6. Step 6: Final answer
    x = 16,190.36

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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.