Home / 20,119.78-27,766.70-11,624.77

Finding the Fourth Proportional to 20,119.78, 27,766.70 and 11,624.77

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Solution

The fourth proportional to 20,119.78, 27,766.70 and 11,624.77 is: 16,042.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.78 : 27,766.70 = 11,624.77 : x
  2. Step 2: Convert to fraction form
    20,119.78/27,766.70 = 11,624.77/x
  3. Step 3: Cross multiply
    20,119.78x = 27,766.70 × 11,624.77
  4. Step 4: Simplify right side
    20,119.78x = 322,781,501.16
  5. Step 5: Solve for x
    x = 322,781,501.16/20,119.78
  6. Step 6: Final answer
    x = 16,042.99

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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.