Home / 21,618.73-29,832.56-12,543.39

Finding the Fourth Proportional to 21,618.73, 29,832.56 and 12,543.39

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Solution

The fourth proportional to 21,618.73, 29,832.56 and 12,543.39 is: 17,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.73 : 29,832.56 = 12,543.39 : x
  2. Step 2: Convert to fraction form
    21,618.73/29,832.56 = 12,543.39/x
  3. Step 3: Cross multiply
    21,618.73x = 29,832.56 × 12,543.39
  4. Step 4: Simplify right side
    21,618.73x = 374,201,386.68
  5. Step 5: Solve for x
    x = 374,201,386.68/21,618.73
  6. Step 6: Final answer
    x = 17,309.13

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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.