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Finding the Fourth Proportional to 18,360.87, 25,335.95 and 10,401.39

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Solution

The fourth proportional to 18,360.87, 25,335.95 and 10,401.39 is: 14,352.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.87 : 25,335.95 = 10,401.39 : x
  2. Step 2: Convert to fraction form
    18,360.87/25,335.95 = 10,401.39/x
  3. Step 3: Cross multiply
    18,360.87x = 25,335.95 × 10,401.39
  4. Step 4: Simplify right side
    18,360.87x = 263,529,044.96
  5. Step 5: Solve for x
    x = 263,529,044.96/18,360.87
  6. Step 6: Final answer
    x = 14,352.75

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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.