Home / 13,945.23-20,909.66-5,618.43

Finding the Fourth Proportional to 13,945.23, 20,909.66 and 5,618.43

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Solution

The fourth proportional to 13,945.23, 20,909.66 and 5,618.43 is: 8,424.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.23 : 20,909.66 = 5,618.43 : x
  2. Step 2: Convert to fraction form
    13,945.23/20,909.66 = 5,618.43/x
  3. Step 3: Cross multiply
    13,945.23x = 20,909.66 × 5,618.43
  4. Step 4: Simplify right side
    13,945.23x = 117,479,432.94
  5. Step 5: Solve for x
    x = 117,479,432.94/13,945.23
  6. Step 6: Final answer
    x = 8,424.35

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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.