Home / 21,196.13-31,794.80-5,613.75

Finding the Fourth Proportional to 21,196.13, 31,794.80 and 5,613.75

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Solution

The fourth proportional to 21,196.13, 31,794.80 and 5,613.75 is: 8,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,196.13 : 31,794.80 = 5,613.75 : x
  2. Step 2: Convert to fraction form
    21,196.13/31,794.80 = 5,613.75/x
  3. Step 3: Cross multiply
    21,196.13x = 31,794.80 × 5,613.75
  4. Step 4: Simplify right side
    21,196.13x = 178,488,030.43
  5. Step 5: Solve for x
    x = 178,488,030.43/21,196.13
  6. Step 6: Final answer
    x = 8,420.79

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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.