Home / 21,581.35-29,777.75-12,627.13

Finding the Fourth Proportional to 21,581.35, 29,777.75 and 12,627.13

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Solution

The fourth proportional to 21,581.35, 29,777.75 and 12,627.13 is: 17,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.35 : 29,777.75 = 12,627.13 : x
  2. Step 2: Convert to fraction form
    21,581.35/29,777.75 = 12,627.13/x
  3. Step 3: Cross multiply
    21,581.35x = 29,777.75 × 12,627.13
  4. Step 4: Simplify right side
    21,581.35x = 376,007,520.36
  5. Step 5: Solve for x
    x = 376,007,520.36/21,581.35
  6. Step 6: Final answer
    x = 17,422.80

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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.