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Finding the Fourth Proportional to 13,891.79, 20,839.84 and 4,529.63

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Solution

The fourth proportional to 13,891.79, 20,839.84 and 4,529.63 is: 6,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.79 : 20,839.84 = 4,529.63 : x
  2. Step 2: Convert to fraction form
    13,891.79/20,839.84 = 4,529.63/x
  3. Step 3: Cross multiply
    13,891.79x = 20,839.84 × 4,529.63
  4. Step 4: Simplify right side
    13,891.79x = 94,396,764.46
  5. Step 5: Solve for x
    x = 94,396,764.46/13,891.79
  6. Step 6: Final answer
    x = 6,795.15

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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.