Home / 21,277.91-29,362.47-11,717.58

Finding the Fourth Proportional to 21,277.91, 29,362.47 and 11,717.58

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Solution

The fourth proportional to 21,277.91, 29,362.47 and 11,717.58 is: 16,169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.91 : 29,362.47 = 11,717.58 : x
  2. Step 2: Convert to fraction form
    21,277.91/29,362.47 = 11,717.58/x
  3. Step 3: Cross multiply
    21,277.91x = 29,362.47 × 11,717.58
  4. Step 4: Simplify right side
    21,277.91x = 344,057,091.22
  5. Step 5: Solve for x
    x = 344,057,091.22/21,277.91
  6. Step 6: Final answer
    x = 16,169.69

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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.