Home / 34,178.20-51,267.30-20,123.80

Finding the Fourth Proportional to 34,178.20, 51,267.30 and 20,123.80

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Solution

The fourth proportional to 34,178.20, 51,267.30 and 20,123.80 is: 30,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,178.20 : 51,267.30 = 20,123.80 : x
  2. Step 2: Convert to fraction form
    34,178.20/51,267.30 = 20,123.80/x
  3. Step 3: Cross multiply
    34,178.20x = 51,267.30 × 20,123.80
  4. Step 4: Simplify right side
    34,178.20x = 1,031,692,891.74
  5. Step 5: Solve for x
    x = 1,031,692,891.74/34,178.20
  6. Step 6: Final answer
    x = 30,185.70

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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.