Home / 15,519.45-21,416.94-8,446.02

Finding the Fourth Proportional to 15,519.45, 21,416.94 and 8,446.02

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Solution

The fourth proportional to 15,519.45, 21,416.94 and 8,446.02 is: 11,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.45 : 21,416.94 = 8,446.02 : x
  2. Step 2: Convert to fraction form
    15,519.45/21,416.94 = 8,446.02/x
  3. Step 3: Cross multiply
    15,519.45x = 21,416.94 × 8,446.02
  4. Step 4: Simplify right side
    15,519.45x = 180,887,903.58
  5. Step 5: Solve for x
    x = 180,887,903.58/15,519.45
  6. Step 6: Final answer
    x = 11,655.56

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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.