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Finding the Fourth Proportional to 18,310, 25,267.80 and 9,926.50

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Solution

The fourth proportional to 18,310, 25,267.80 and 9,926.50 is: 13,698.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310 : 25,267.80 = 9,926.50 : x
  2. Step 2: Convert to fraction form
    18,310/25,267.80 = 9,926.50/x
  3. Step 3: Cross multiply
    18,310x = 25,267.80 × 9,926.50
  4. Step 4: Simplify right side
    18,310x = 250,820,816.70
  5. Step 5: Solve for x
    x = 250,820,816.70/18,310
  6. Step 6: Final answer
    x = 13,698.57

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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.