Home / 10,123.50-15,178.67-4,198.76

Finding the Fourth Proportional to 10,123.50, 15,178.67 and 4,198.76

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Solution

The fourth proportional to 10,123.50, 15,178.67 and 4,198.76 is: 6,295.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,123.50 : 15,178.67 = 4,198.76 : x
  2. Step 2: Convert to fraction form
    10,123.50/15,178.67 = 4,198.76/x
  3. Step 3: Cross multiply
    10,123.50x = 15,178.67 × 4,198.76
  4. Step 4: Simplify right side
    10,123.50x = 63,731,592.45
  5. Step 5: Solve for x
    x = 63,731,592.45/10,123.50
  6. Step 6: Final answer
    x = 6,295.41

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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.