Home / 13,934.79-20,902.88-5,613.69

Finding the Fourth Proportional to 13,934.79, 20,902.88 and 5,613.69

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Solution

The fourth proportional to 13,934.79, 20,902.88 and 5,613.69 is: 8,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.79 : 20,902.88 = 5,613.69 : x
  2. Step 2: Convert to fraction form
    13,934.79/20,902.88 = 5,613.69/x
  3. Step 3: Cross multiply
    13,934.79x = 20,902.88 × 5,613.69
  4. Step 4: Simplify right side
    13,934.79x = 117,342,288.43
  5. Step 5: Solve for x
    x = 117,342,288.43/13,934.79
  6. Step 6: Final answer
    x = 8,420.81

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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.