Home / 20,419.58-30,569.88-15,177.80

Finding the Fourth Proportional to 20,419.58, 30,569.88 and 15,177.80

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Solution

The fourth proportional to 20,419.58, 30,569.88 and 15,177.80 is: 22,722.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.58 : 30,569.88 = 15,177.80 : x
  2. Step 2: Convert to fraction form
    20,419.58/30,569.88 = 15,177.80/x
  3. Step 3: Cross multiply
    20,419.58x = 30,569.88 × 15,177.80
  4. Step 4: Simplify right side
    20,419.58x = 463,983,524.66
  5. Step 5: Solve for x
    x = 463,983,524.66/20,419.58
  6. Step 6: Final answer
    x = 22,722.48

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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.