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Finding the Fourth Proportional to 21,245.68, 31,868.25 and 9,550.63

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Solution

The fourth proportional to 21,245.68, 31,868.25 and 9,550.63 is: 14,325.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.68 : 31,868.25 = 9,550.63 : x
  2. Step 2: Convert to fraction form
    21,245.68/31,868.25 = 9,550.63/x
  3. Step 3: Cross multiply
    21,245.68x = 31,868.25 × 9,550.63
  4. Step 4: Simplify right side
    21,245.68x = 304,361,864.50
  5. Step 5: Solve for x
    x = 304,361,864.50/21,245.68
  6. Step 6: Final answer
    x = 14,325.82

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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.