Home / 15,321.26-21,145.31-8,606.88

Finding the Fourth Proportional to 15,321.26, 21,145.31 and 8,606.88

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Solution

The fourth proportional to 15,321.26, 21,145.31 and 8,606.88 is: 11,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.26 : 21,145.31 = 8,606.88 : x
  2. Step 2: Convert to fraction form
    15,321.26/21,145.31 = 8,606.88/x
  3. Step 3: Cross multiply
    15,321.26x = 21,145.31 × 8,606.88
  4. Step 4: Simplify right side
    15,321.26x = 181,995,102.70
  5. Step 5: Solve for x
    x = 181,995,102.70/15,321.26
  6. Step 6: Final answer
    x = 11,878.60

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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.