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Finding the Fourth Proportional to 18,159.09, 25,061.47 and 10,992.92

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Solution

The fourth proportional to 18,159.09, 25,061.47 and 10,992.92 is: 15,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,159.09 : 25,061.47 = 10,992.92 : x
  2. Step 2: Convert to fraction form
    18,159.09/25,061.47 = 10,992.92/x
  3. Step 3: Cross multiply
    18,159.09x = 25,061.47 × 10,992.92
  4. Step 4: Simplify right side
    18,159.09x = 275,498,582.00
  5. Step 5: Solve for x
    x = 275,498,582.00/18,159.09
  6. Step 6: Final answer
    x = 15,171.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.