Home / 21,340.56-29,451.12-11,909.04

Finding the Fourth Proportional to 21,340.56, 29,451.12 and 11,909.04

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Solution

The fourth proportional to 21,340.56, 29,451.12 and 11,909.04 is: 16,435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.56 : 29,451.12 = 11,909.04 : x
  2. Step 2: Convert to fraction form
    21,340.56/29,451.12 = 11,909.04/x
  3. Step 3: Cross multiply
    21,340.56x = 29,451.12 × 11,909.04
  4. Step 4: Simplify right side
    21,340.56x = 350,734,566.12
  5. Step 5: Solve for x
    x = 350,734,566.12/21,340.56
  6. Step 6: Final answer
    x = 16,435.12

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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.