Home / 11,160.05-15,399.88-6,379.05

Finding the Fourth Proportional to 11,160.05, 15,399.88 and 6,379.05

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Solution

The fourth proportional to 11,160.05, 15,399.88 and 6,379.05 is: 8,802.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.05 : 15,399.88 = 6,379.05 : x
  2. Step 2: Convert to fraction form
    11,160.05/15,399.88 = 6,379.05/x
  3. Step 3: Cross multiply
    11,160.05x = 15,399.88 × 6,379.05
  4. Step 4: Simplify right side
    11,160.05x = 98,236,604.51
  5. Step 5: Solve for x
    x = 98,236,604.51/11,160.05
  6. Step 6: Final answer
    x = 8,802.53

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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.