Home / 21,476.79-29,641.50-12,529.53

Finding the Fourth Proportional to 21,476.79, 29,641.50 and 12,529.53

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Solution

The fourth proportional to 21,476.79, 29,641.50 and 12,529.53 is: 17,292.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.79 : 29,641.50 = 12,529.53 : x
  2. Step 2: Convert to fraction form
    21,476.79/29,641.50 = 12,529.53/x
  3. Step 3: Cross multiply
    21,476.79x = 29,641.50 × 12,529.53
  4. Step 4: Simplify right side
    21,476.79x = 371,394,063.50
  5. Step 5: Solve for x
    x = 371,394,063.50/21,476.79
  6. Step 6: Final answer
    x = 17,292.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.