Home / 11,005.08-15,186.74-6,289.08

Finding the Fourth Proportional to 11,005.08, 15,186.74 and 6,289.08

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Solution

The fourth proportional to 11,005.08, 15,186.74 and 6,289.08 is: 8,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.08 : 15,186.74 = 6,289.08 : x
  2. Step 2: Convert to fraction form
    11,005.08/15,186.74 = 6,289.08/x
  3. Step 3: Cross multiply
    11,005.08x = 15,186.74 × 6,289.08
  4. Step 4: Simplify right side
    11,005.08x = 95,510,622.80
  5. Step 5: Solve for x
    x = 95,510,622.80/11,005.08
  6. Step 6: Final answer
    x = 8,678.78

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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.