Home / 21,552.22-29,746.14-13,489.61

Finding the Fourth Proportional to 21,552.22, 29,746.14 and 13,489.61

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Solution

The fourth proportional to 21,552.22, 29,746.14 and 13,489.61 is: 18,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,552.22 : 29,746.14 = 13,489.61 : x
  2. Step 2: Convert to fraction form
    21,552.22/29,746.14 = 13,489.61/x
  3. Step 3: Cross multiply
    21,552.22x = 29,746.14 × 13,489.61
  4. Step 4: Simplify right side
    21,552.22x = 401,263,827.61
  5. Step 5: Solve for x
    x = 401,263,827.61/21,552.22
  6. Step 6: Final answer
    x = 18,618.22

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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.