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Finding the Fourth Proportional to 18,307.86, 25,265.25 and 11,230.10

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Solution

The fourth proportional to 18,307.86, 25,265.25 and 11,230.10 is: 15,497.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.86 : 25,265.25 = 11,230.10 : x
  2. Step 2: Convert to fraction form
    18,307.86/25,265.25 = 11,230.10/x
  3. Step 3: Cross multiply
    18,307.86x = 25,265.25 × 11,230.10
  4. Step 4: Simplify right side
    18,307.86x = 283,731,284.03
  5. Step 5: Solve for x
    x = 283,731,284.03/18,307.86
  6. Step 6: Final answer
    x = 15,497.79

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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.