Home / 21,265.55-29,349.68-12,772.35

Finding the Fourth Proportional to 21,265.55, 29,349.68 and 12,772.35

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Solution

The fourth proportional to 21,265.55, 29,349.68 and 12,772.35 is: 17,627.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.55 : 29,349.68 = 12,772.35 : x
  2. Step 2: Convert to fraction form
    21,265.55/29,349.68 = 12,772.35/x
  3. Step 3: Cross multiply
    21,265.55x = 29,349.68 × 12,772.35
  4. Step 4: Simplify right side
    21,265.55x = 374,864,321.49
  5. Step 5: Solve for x
    x = 374,864,321.49/21,265.55
  6. Step 6: Final answer
    x = 17,627.78

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1.5x scale

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.