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Finding the Fourth Proportional to 18,329, 25,294.16 and 9,945.50

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Solution

The fourth proportional to 18,329, 25,294.16 and 9,945.50 is: 13,724.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329 : 25,294.16 = 9,945.50 : x
  2. Step 2: Convert to fraction form
    18,329/25,294.16 = 9,945.50/x
  3. Step 3: Cross multiply
    18,329x = 25,294.16 × 9,945.50
  4. Step 4: Simplify right side
    18,329x = 251,563,018.55
  5. Step 5: Solve for x
    x = 251,563,018.55/18,329
  6. Step 6: Final answer
    x = 13,724.86

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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.