Home / 11,049.60-15,239.69-7,813.70

Finding the Fourth Proportional to 11,049.60, 15,239.69 and 7,813.70

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Solution

The fourth proportional to 11,049.60, 15,239.69 and 7,813.70 is: 10,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,049.60 : 15,239.69 = 7,813.70 : x
  2. Step 2: Convert to fraction form
    11,049.60/15,239.69 = 7,813.70/x
  3. Step 3: Cross multiply
    11,049.60x = 15,239.69 × 7,813.70
  4. Step 4: Simplify right side
    11,049.60x = 119,078,250.49
  5. Step 5: Solve for x
    x = 119,078,250.49/11,049.60
  6. Step 6: Final answer
    x = 10,776.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.