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Finding the Fourth Proportional to 18,012.92, 26,964.01 and 15,355.71

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Solution

The fourth proportional to 18,012.92, 26,964.01 and 15,355.71 is: 22,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.92 : 26,964.01 = 15,355.71 : x
  2. Step 2: Convert to fraction form
    18,012.92/26,964.01 = 15,355.71/x
  3. Step 3: Cross multiply
    18,012.92x = 26,964.01 × 15,355.71
  4. Step 4: Simplify right side
    18,012.92x = 414,051,479.61
  5. Step 5: Solve for x
    x = 414,051,479.61/18,012.92
  6. Step 6: Final answer
    x = 22,986.37

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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.