Home / 15,519.97-21,416.89-8,446.37

Finding the Fourth Proportional to 15,519.97, 21,416.89 and 8,446.37

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Solution

The fourth proportional to 15,519.97, 21,416.89 and 8,446.37 is: 11,655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.97 : 21,416.89 = 8,446.37 : x
  2. Step 2: Convert to fraction form
    15,519.97/21,416.89 = 8,446.37/x
  3. Step 3: Cross multiply
    15,519.97x = 21,416.89 × 8,446.37
  4. Step 4: Simplify right side
    15,519.97x = 180,894,934.96
  5. Step 5: Solve for x
    x = 180,894,934.96/15,519.97
  6. Step 6: Final answer
    x = 11,655.63

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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.