Home / 10,221.48-15,337.08-4,379.76

Finding the Fourth Proportional to 10,221.48, 15,337.08 and 4,379.76

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Solution

The fourth proportional to 10,221.48, 15,337.08 and 4,379.76 is: 6,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.48 : 15,337.08 = 4,379.76 : x
  2. Step 2: Convert to fraction form
    10,221.48/15,337.08 = 4,379.76/x
  3. Step 3: Cross multiply
    10,221.48x = 15,337.08 × 4,379.76
  4. Step 4: Simplify right side
    10,221.48x = 67,172,729.50
  5. Step 5: Solve for x
    x = 67,172,729.50/10,221.48
  6. Step 6: Final answer
    x = 6,571.72

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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.