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Finding the Fourth Proportional to 14,263.75, 21,408.86 and 7,248.75

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Solution

The fourth proportional to 14,263.75, 21,408.86 and 7,248.75 is: 10,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,263.75 : 21,408.86 = 7,248.75 : x
  2. Step 2: Convert to fraction form
    14,263.75/21,408.86 = 7,248.75/x
  3. Step 3: Cross multiply
    14,263.75x = 21,408.86 × 7,248.75
  4. Step 4: Simplify right side
    14,263.75x = 155,187,473.93
  5. Step 5: Solve for x
    x = 155,187,473.93/14,263.75
  6. Step 6: Final answer
    x = 10,879.85

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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.