Home / 15,694.47-21,653.09-8,887.56

Finding the Fourth Proportional to 15,694.47, 21,653.09 and 8,887.56

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Solution

The fourth proportional to 15,694.47, 21,653.09 and 8,887.56 is: 12,261.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.47 : 21,653.09 = 8,887.56 : x
  2. Step 2: Convert to fraction form
    15,694.47/21,653.09 = 8,887.56/x
  3. Step 3: Cross multiply
    15,694.47x = 21,653.09 × 8,887.56
  4. Step 4: Simplify right side
    15,694.47x = 192,443,136.56
  5. Step 5: Solve for x
    x = 192,443,136.56/15,694.47
  6. Step 6: Final answer
    x = 12,261.84

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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.