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Finding the Fourth Proportional to 18,310.80, 25,268.67 and 9,927.30

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Solution

The fourth proportional to 18,310.80, 25,268.67 and 9,927.30 is: 13,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.80 : 25,268.67 = 9,927.30 : x
  2. Step 2: Convert to fraction form
    18,310.80/25,268.67 = 9,927.30/x
  3. Step 3: Cross multiply
    18,310.80x = 25,268.67 × 9,927.30
  4. Step 4: Simplify right side
    18,310.80x = 250,849,667.69
  5. Step 5: Solve for x
    x = 250,849,667.69/18,310.80
  6. Step 6: Final answer
    x = 13,699.55

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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.