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Finding the Fourth Proportional to 18,898.72, 26,078.76 and 10,401.01

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Solution

The fourth proportional to 18,898.72, 26,078.76 and 10,401.01 is: 14,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.72 : 26,078.76 = 10,401.01 : x
  2. Step 2: Convert to fraction form
    18,898.72/26,078.76 = 10,401.01/x
  3. Step 3: Cross multiply
    18,898.72x = 26,078.76 × 10,401.01
  4. Step 4: Simplify right side
    18,898.72x = 271,245,378.35
  5. Step 5: Solve for x
    x = 271,245,378.35/18,898.72
  6. Step 6: Final answer
    x = 14,352.58

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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.