Home / 11,128.60-15,362.94-7,610.20

Finding the Fourth Proportional to 11,128.60, 15,362.94 and 7,610.20

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Solution

The fourth proportional to 11,128.60, 15,362.94 and 7,610.20 is: 10,505.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.60 : 15,362.94 = 7,610.20 : x
  2. Step 2: Convert to fraction form
    11,128.60/15,362.94 = 7,610.20/x
  3. Step 3: Cross multiply
    11,128.60x = 15,362.94 × 7,610.20
  4. Step 4: Simplify right side
    11,128.60x = 116,915,045.99
  5. Step 5: Solve for x
    x = 116,915,045.99/11,128.60
  6. Step 6: Final answer
    x = 10,505.82

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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.