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Finding the Fourth Proportional to 13,751.84, 20,625.14 and 3,888.74

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Solution

The fourth proportional to 13,751.84, 20,625.14 and 3,888.74 is: 5,832.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.84 : 20,625.14 = 3,888.74 : x
  2. Step 2: Convert to fraction form
    13,751.84/20,625.14 = 3,888.74/x
  3. Step 3: Cross multiply
    13,751.84x = 20,625.14 × 3,888.74
  4. Step 4: Simplify right side
    13,751.84x = 80,205,806.92
  5. Step 5: Solve for x
    x = 80,205,806.92/13,751.84
  6. Step 6: Final answer
    x = 5,832.37

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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.