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Finding the Fourth Proportional to 22,811.30, 34,228.30 and 12,809.84

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Solution

The fourth proportional to 22,811.30, 34,228.30 and 12,809.84 is: 19,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,811.30 : 34,228.30 = 12,809.84 : x
  2. Step 2: Convert to fraction form
    22,811.30/34,228.30 = 12,809.84/x
  3. Step 3: Cross multiply
    22,811.30x = 34,228.30 × 12,809.84
  4. Step 4: Simplify right side
    22,811.30x = 438,459,046.47
  5. Step 5: Solve for x
    x = 438,459,046.47/22,811.30
  6. Step 6: Final answer
    x = 19,221.13

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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.