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Finding the Fourth Proportional to 18,017.37, 27,007.58 and 6,921.07

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Solution

The fourth proportional to 18,017.37, 27,007.58 and 6,921.07 is: 10,374.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.37 : 27,007.58 = 6,921.07 : x
  2. Step 2: Convert to fraction form
    18,017.37/27,007.58 = 6,921.07/x
  3. Step 3: Cross multiply
    18,017.37x = 27,007.58 × 6,921.07
  4. Step 4: Simplify right side
    18,017.37x = 186,921,351.71
  5. Step 5: Solve for x
    x = 186,921,351.71/18,017.37
  6. Step 6: Final answer
    x = 10,374.51

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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.