Home / 11,005.29-15,187.30-6,289.57

Finding the Fourth Proportional to 11,005.29, 15,187.30 and 6,289.57

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Solution

The fourth proportional to 11,005.29, 15,187.30 and 6,289.57 is: 8,679.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.29 : 15,187.30 = 6,289.57 : x
  2. Step 2: Convert to fraction form
    11,005.29/15,187.30 = 6,289.57/x
  3. Step 3: Cross multiply
    11,005.29x = 15,187.30 × 6,289.57
  4. Step 4: Simplify right side
    11,005.29x = 95,521,586.46
  5. Step 5: Solve for x
    x = 95,521,586.46/11,005.29
  6. Step 6: Final answer
    x = 8,679.61

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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.