Home / 21,182.91-29,235.92-11,754.51

Finding the Fourth Proportional to 21,182.91, 29,235.92 and 11,754.51

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Solution

The fourth proportional to 21,182.91, 29,235.92 and 11,754.51 is: 16,223.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.91 : 29,235.92 = 11,754.51 : x
  2. Step 2: Convert to fraction form
    21,182.91/29,235.92 = 11,754.51/x
  3. Step 3: Cross multiply
    21,182.91x = 29,235.92 × 11,754.51
  4. Step 4: Simplify right side
    21,182.91x = 343,653,855.23
  5. Step 5: Solve for x
    x = 343,653,855.23/21,182.91
  6. Step 6: Final answer
    x = 16,223.17

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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.