Home / 21,717.48-29,968.47-12,286.65

Finding the Fourth Proportional to 21,717.48, 29,968.47 and 12,286.65

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Solution

The fourth proportional to 21,717.48, 29,968.47 and 12,286.65 is: 16,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.48 : 29,968.47 = 12,286.65 : x
  2. Step 2: Convert to fraction form
    21,717.48/29,968.47 = 12,286.65/x
  3. Step 3: Cross multiply
    21,717.48x = 29,968.47 × 12,286.65
  4. Step 4: Simplify right side
    21,717.48x = 368,212,101.93
  5. Step 5: Solve for x
    x = 368,212,101.93/21,717.48
  6. Step 6: Final answer
    x = 16,954.64

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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.