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Finding the Fourth Proportional to 18,168.30, 27,208.71 and 12,307.14

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Solution

The fourth proportional to 18,168.30, 27,208.71 and 12,307.14 is: 18,431.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.30 : 27,208.71 = 12,307.14 : x
  2. Step 2: Convert to fraction form
    18,168.30/27,208.71 = 12,307.14/x
  3. Step 3: Cross multiply
    18,168.30x = 27,208.71 × 12,307.14
  4. Step 4: Simplify right side
    18,168.30x = 334,861,403.19
  5. Step 5: Solve for x
    x = 334,861,403.19/18,168.30
  6. Step 6: Final answer
    x = 18,431.08

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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.