Home / 20,945.42-31,422.52-6,153.08

Finding the Fourth Proportional to 20,945.42, 31,422.52 and 6,153.08

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Solution

The fourth proportional to 20,945.42, 31,422.52 and 6,153.08 is: 9,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.42 : 31,422.52 = 6,153.08 : x
  2. Step 2: Convert to fraction form
    20,945.42/31,422.52 = 6,153.08/x
  3. Step 3: Cross multiply
    20,945.42x = 31,422.52 × 6,153.08
  4. Step 4: Simplify right side
    20,945.42x = 193,345,279.36
  5. Step 5: Solve for x
    x = 193,345,279.36/20,945.42
  6. Step 6: Final answer
    x = 9,230.91

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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.