Home / 20,937.39-31,409.51-6,146.79

Finding the Fourth Proportional to 20,937.39, 31,409.51 and 6,146.79

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Solution

The fourth proportional to 20,937.39, 31,409.51 and 6,146.79 is: 9,221.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.39 : 31,409.51 = 6,146.79 : x
  2. Step 2: Convert to fraction form
    20,937.39/31,409.51 = 6,146.79/x
  3. Step 3: Cross multiply
    20,937.39x = 31,409.51 × 6,146.79
  4. Step 4: Simplify right side
    20,937.39x = 193,067,631.24
  5. Step 5: Solve for x
    x = 193,067,631.24/20,937.39
  6. Step 6: Final answer
    x = 9,221.19

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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.