Home / 11,005.88-15,188.13-6,290.15

Finding the Fourth Proportional to 11,005.88, 15,188.13 and 6,290.15

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Solution

The fourth proportional to 11,005.88, 15,188.13 and 6,290.15 is: 8,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.88 : 15,188.13 = 6,290.15 : x
  2. Step 2: Convert to fraction form
    11,005.88/15,188.13 = 6,290.15/x
  3. Step 3: Cross multiply
    11,005.88x = 15,188.13 × 6,290.15
  4. Step 4: Simplify right side
    11,005.88x = 95,535,539.98
  5. Step 5: Solve for x
    x = 95,535,539.98/11,005.88
  6. Step 6: Final answer
    x = 8,680.41

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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.