Home / 15,446.88-21,318.64-8,732.80

Finding the Fourth Proportional to 15,446.88, 21,318.64 and 8,732.80

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Solution

The fourth proportional to 15,446.88, 21,318.64 and 8,732.80 is: 12,052.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.88 : 21,318.64 = 8,732.80 : x
  2. Step 2: Convert to fraction form
    15,446.88/21,318.64 = 8,732.80/x
  3. Step 3: Cross multiply
    15,446.88x = 21,318.64 × 8,732.80
  4. Step 4: Simplify right side
    15,446.88x = 186,171,419.39
  5. Step 5: Solve for x
    x = 186,171,419.39/15,446.88
  6. Step 6: Final answer
    x = 12,052.36

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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.