Home / 11,409.12-15,744-6,694.56

Finding the Fourth Proportional to 11,409.12, 15,744 and 6,694.56

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Solution

The fourth proportional to 11,409.12, 15,744 and 6,694.56 is: 9,238.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.12 : 15,744 = 6,694.56 : x
  2. Step 2: Convert to fraction form
    11,409.12/15,744 = 6,694.56/x
  3. Step 3: Cross multiply
    11,409.12x = 15,744 × 6,694.56
  4. Step 4: Simplify right side
    11,409.12x = 105,399,152.64
  5. Step 5: Solve for x
    x = 105,399,152.64/11,409.12
  6. Step 6: Final answer
    x = 9,238.15

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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.