Home / 11,179.04-15,427.12-6,989.68

Finding the Fourth Proportional to 11,179.04, 15,427.12 and 6,989.68

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Solution

The fourth proportional to 11,179.04, 15,427.12 and 6,989.68 is: 9,645.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.04 : 15,427.12 = 6,989.68 : x
  2. Step 2: Convert to fraction form
    11,179.04/15,427.12 = 6,989.68/x
  3. Step 3: Cross multiply
    11,179.04x = 15,427.12 × 6,989.68
  4. Step 4: Simplify right side
    11,179.04x = 107,830,632.12
  5. Step 5: Solve for x
    x = 107,830,632.12/11,179.04
  6. Step 6: Final answer
    x = 9,645.79

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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.