Home / 20,393.45-30,569.52-13,820.30

Finding the Fourth Proportional to 20,393.45, 30,569.52 and 13,820.30

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Solution

The fourth proportional to 20,393.45, 30,569.52 and 13,820.30 is: 20,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.45 : 30,569.52 = 13,820.30 : x
  2. Step 2: Convert to fraction form
    20,393.45/30,569.52 = 13,820.30/x
  3. Step 3: Cross multiply
    20,393.45x = 30,569.52 × 13,820.30
  4. Step 4: Simplify right side
    20,393.45x = 422,479,937.26
  5. Step 5: Solve for x
    x = 422,479,937.26/20,393.45
  6. Step 6: Final answer
    x = 20,716.45

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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.