Home / 21,110.22-29,132.19-11,679.66

Finding the Fourth Proportional to 21,110.22, 29,132.19 and 11,679.66

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Solution

The fourth proportional to 21,110.22, 29,132.19 and 11,679.66 is: 16,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.22 : 29,132.19 = 11,679.66 : x
  2. Step 2: Convert to fraction form
    21,110.22/29,132.19 = 11,679.66/x
  3. Step 3: Cross multiply
    21,110.22x = 29,132.19 × 11,679.66
  4. Step 4: Simplify right side
    21,110.22x = 340,254,074.26
  5. Step 5: Solve for x
    x = 340,254,074.26/21,110.22
  6. Step 6: Final answer
    x = 16,117.98

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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.