Home / 21,340.13-29,449.31-11,908.62

Finding the Fourth Proportional to 21,340.13, 29,449.31 and 11,908.62

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Solution

The fourth proportional to 21,340.13, 29,449.31 and 11,908.62 is: 16,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.13 : 29,449.31 = 11,908.62 : x
  2. Step 2: Convert to fraction form
    21,340.13/29,449.31 = 11,908.62/x
  3. Step 3: Cross multiply
    21,340.13x = 29,449.31 × 11,908.62
  4. Step 4: Simplify right side
    21,340.13x = 350,700,582.51
  5. Step 5: Solve for x
    x = 350,700,582.51/21,340.13
  6. Step 6: Final answer
    x = 16,433.86

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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.