Home / 11,125.70-16,688.55-10,391.30

Finding the Fourth Proportional to 11,125.70, 16,688.55 and 10,391.30

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Solution

The fourth proportional to 11,125.70, 16,688.55 and 10,391.30 is: 15,586.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.70 : 16,688.55 = 10,391.30 : x
  2. Step 2: Convert to fraction form
    11,125.70/16,688.55 = 10,391.30/x
  3. Step 3: Cross multiply
    11,125.70x = 16,688.55 × 10,391.30
  4. Step 4: Simplify right side
    11,125.70x = 173,415,729.62
  5. Step 5: Solve for x
    x = 173,415,729.62/11,125.70
  6. Step 6: Final answer
    x = 15,586.95

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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.