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Finding the Fourth Proportional to 25,590.83, 38,378.49 and 8,947.76

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Solution

The fourth proportional to 25,590.83, 38,378.49 and 8,947.76 is: 13,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,590.83 : 38,378.49 = 8,947.76 : x
  2. Step 2: Convert to fraction form
    25,590.83/38,378.49 = 8,947.76/x
  3. Step 3: Cross multiply
    25,590.83x = 38,378.49 × 8,947.76
  4. Step 4: Simplify right side
    25,590.83x = 343,401,517.68
  5. Step 5: Solve for x
    x = 343,401,517.68/25,590.83
  6. Step 6: Final answer
    x = 13,418.93

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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.