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Finding the Fourth Proportional to 18,398, 25,389.34 and 10,014.50

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Solution

The fourth proportional to 18,398, 25,389.34 and 10,014.50 is: 13,820.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398 : 25,389.34 = 10,014.50 : x
  2. Step 2: Convert to fraction form
    18,398/25,389.34 = 10,014.50/x
  3. Step 3: Cross multiply
    18,398x = 25,389.34 × 10,014.50
  4. Step 4: Simplify right side
    18,398x = 254,261,545.43
  5. Step 5: Solve for x
    x = 254,261,545.43/18,398
  6. Step 6: Final answer
    x = 13,820.06

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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.