Home / 21,342.56-29,453.88-11,911.04

Finding the Fourth Proportional to 21,342.56, 29,453.88 and 11,911.04

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Solution

The fourth proportional to 21,342.56, 29,453.88 and 11,911.04 is: 16,437.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.56 : 29,453.88 = 11,911.04 : x
  2. Step 2: Convert to fraction form
    21,342.56/29,453.88 = 11,911.04/x
  3. Step 3: Cross multiply
    21,342.56x = 29,453.88 × 11,911.04
  4. Step 4: Simplify right side
    21,342.56x = 350,826,342.84
  5. Step 5: Solve for x
    x = 350,826,342.84/21,342.56
  6. Step 6: Final answer
    x = 16,437.88

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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.