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Finding the Fourth Proportional to 18,530.57, 27,795.80 and 14,319.94

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Solution

The fourth proportional to 18,530.57, 27,795.80 and 14,319.94 is: 21,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.57 : 27,795.80 = 14,319.94 : x
  2. Step 2: Convert to fraction form
    18,530.57/27,795.80 = 14,319.94/x
  3. Step 3: Cross multiply
    18,530.57x = 27,795.80 × 14,319.94
  4. Step 4: Simplify right side
    18,530.57x = 398,033,977.67
  5. Step 5: Solve for x
    x = 398,033,977.67/18,530.57
  6. Step 6: Final answer
    x = 21,479.86

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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.