Home / 20,225.10-30,179.44-18,123.69

Finding the Fourth Proportional to 20,225.10, 30,179.44 and 18,123.69

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Solution

The fourth proportional to 20,225.10, 30,179.44 and 18,123.69 is: 27,043.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.10 : 30,179.44 = 18,123.69 : x
  2. Step 2: Convert to fraction form
    20,225.10/30,179.44 = 18,123.69/x
  3. Step 3: Cross multiply
    20,225.10x = 30,179.44 × 18,123.69
  4. Step 4: Simplify right side
    20,225.10x = 546,962,814.93
  5. Step 5: Solve for x
    x = 546,962,814.93/20,225.10
  6. Step 6: Final answer
    x = 27,043.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.