Home / 21,659.69-29,887.22-12,705.14

Finding the Fourth Proportional to 21,659.69, 29,887.22 and 12,705.14

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Solution

The fourth proportional to 21,659.69, 29,887.22 and 12,705.14 is: 17,531.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.69 : 29,887.22 = 12,705.14 : x
  2. Step 2: Convert to fraction form
    21,659.69/29,887.22 = 12,705.14/x
  3. Step 3: Cross multiply
    21,659.69x = 29,887.22 × 12,705.14
  4. Step 4: Simplify right side
    21,659.69x = 379,721,101.35
  5. Step 5: Solve for x
    x = 379,721,101.35/21,659.69
  6. Step 6: Final answer
    x = 17,531.24

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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.