Home / 21,077.62-31,616.07-6,286.58

Finding the Fourth Proportional to 21,077.62, 31,616.07 and 6,286.58

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Solution

The fourth proportional to 21,077.62, 31,616.07 and 6,286.58 is: 9,429.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.62 : 31,616.07 = 6,286.58 : x
  2. Step 2: Convert to fraction form
    21,077.62/31,616.07 = 6,286.58/x
  3. Step 3: Cross multiply
    21,077.62x = 31,616.07 × 6,286.58
  4. Step 4: Simplify right side
    21,077.62x = 198,756,953.34
  5. Step 5: Solve for x
    x = 198,756,953.34/21,077.62
  6. Step 6: Final answer
    x = 9,429.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.