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Finding the Fourth Proportional to 18,417.92, 27,639.64 and 7,323.47

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Solution

The fourth proportional to 18,417.92, 27,639.64 and 7,323.47 is: 10,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,417.92 : 27,639.64 = 7,323.47 : x
  2. Step 2: Convert to fraction form
    18,417.92/27,639.64 = 7,323.47/x
  3. Step 3: Cross multiply
    18,417.92x = 27,639.64 × 7,323.47
  4. Step 4: Simplify right side
    18,417.92x = 202,417,945.31
  5. Step 5: Solve for x
    x = 202,417,945.31/18,417.92
  6. Step 6: Final answer
    x = 10,990.27

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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.