Home / 21,340.40-29,448.84-11,908.88

Finding the Fourth Proportional to 21,340.40, 29,448.84 and 11,908.88

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Solution

The fourth proportional to 21,340.40, 29,448.84 and 11,908.88 is: 16,433.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.40 : 29,448.84 = 11,908.88 : x
  2. Step 2: Convert to fraction form
    21,340.40/29,448.84 = 11,908.88/x
  3. Step 3: Cross multiply
    21,340.40x = 29,448.84 × 11,908.88
  4. Step 4: Simplify right side
    21,340.40x = 350,702,701.70
  5. Step 5: Solve for x
    x = 350,702,701.70/21,340.40
  6. Step 6: Final answer
    x = 16,433.75

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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.