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Finding the Fourth Proportional to 18,276, 25,220.88 and 9,892.50

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Solution

The fourth proportional to 18,276, 25,220.88 and 9,892.50 is: 13,651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276 : 25,220.88 = 9,892.50 : x
  2. Step 2: Convert to fraction form
    18,276/25,220.88 = 9,892.50/x
  3. Step 3: Cross multiply
    18,276x = 25,220.88 × 9,892.50
  4. Step 4: Simplify right side
    18,276x = 249,497,555.40
  5. Step 5: Solve for x
    x = 249,497,555.40/18,276
  6. Step 6: Final answer
    x = 13,651.65

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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.