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Finding the Fourth Proportional to 18,307.08, 25,262.01 and 13,530

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Solution

The fourth proportional to 18,307.08, 25,262.01 and 13,530 is: 18,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.08 : 25,262.01 = 13,530 : x
  2. Step 2: Convert to fraction form
    18,307.08/25,262.01 = 13,530/x
  3. Step 3: Cross multiply
    18,307.08x = 25,262.01 × 13,530
  4. Step 4: Simplify right side
    18,307.08x = 341,794,995.30
  5. Step 5: Solve for x
    x = 341,794,995.30/18,307.08
  6. Step 6: Final answer
    x = 18,670.10

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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.