Home / 21,132.09-29,161.22-11,572.07

Finding the Fourth Proportional to 21,132.09, 29,161.22 and 11,572.07

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Solution

The fourth proportional to 21,132.09, 29,161.22 and 11,572.07 is: 15,968.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.09 : 29,161.22 = 11,572.07 : x
  2. Step 2: Convert to fraction form
    21,132.09/29,161.22 = 11,572.07/x
  3. Step 3: Cross multiply
    21,132.09x = 29,161.22 × 11,572.07
  4. Step 4: Simplify right side
    21,132.09x = 337,455,475.46
  5. Step 5: Solve for x
    x = 337,455,475.46/21,132.09
  6. Step 6: Final answer
    x = 15,968.86

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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.