Home / 11,351.30-15,664.44-7,155.50

Finding the Fourth Proportional to 11,351.30, 15,664.44 and 7,155.50

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Solution

The fourth proportional to 11,351.30, 15,664.44 and 7,155.50 is: 9,874.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.30 : 15,664.44 = 7,155.50 : x
  2. Step 2: Convert to fraction form
    11,351.30/15,664.44 = 7,155.50/x
  3. Step 3: Cross multiply
    11,351.30x = 15,664.44 × 7,155.50
  4. Step 4: Simplify right side
    11,351.30x = 112,086,900.42
  5. Step 5: Solve for x
    x = 112,086,900.42/11,351.30
  6. Step 6: Final answer
    x = 9,874.37

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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.