Home / 21,132.41-29,161.43-11,572.41

Finding the Fourth Proportional to 21,132.41, 29,161.43 and 11,572.41

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Solution

The fourth proportional to 21,132.41, 29,161.43 and 11,572.41 is: 15,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.41 : 29,161.43 = 11,572.41 : x
  2. Step 2: Convert to fraction form
    21,132.41/29,161.43 = 11,572.41/x
  3. Step 3: Cross multiply
    21,132.41x = 29,161.43 × 11,572.41
  4. Step 4: Simplify right side
    21,132.41x = 337,467,966.28
  5. Step 5: Solve for x
    x = 337,467,966.28/21,132.41
  6. Step 6: Final answer
    x = 15,969.21

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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.