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Finding the Fourth Proportional to 25,898.80, 38,764.64 and 13,401.62

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Solution

The fourth proportional to 25,898.80, 38,764.64 and 13,401.62 is: 20,059.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,898.80 : 38,764.64 = 13,401.62 : x
  2. Step 2: Convert to fraction form
    25,898.80/38,764.64 = 13,401.62/x
  3. Step 3: Cross multiply
    25,898.80x = 38,764.64 × 13,401.62
  4. Step 4: Simplify right side
    25,898.80x = 519,508,974.72
  5. Step 5: Solve for x
    x = 519,508,974.72/25,898.80
  6. Step 6: Final answer
    x = 20,059.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.