Home / 20,269.92-27,971.34-11,317.99

Finding the Fourth Proportional to 20,269.92, 27,971.34 and 11,317.99

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Solution

The fourth proportional to 20,269.92, 27,971.34 and 11,317.99 is: 15,618.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.92 : 27,971.34 = 11,317.99 : x
  2. Step 2: Convert to fraction form
    20,269.92/27,971.34 = 11,317.99/x
  3. Step 3: Cross multiply
    20,269.92x = 27,971.34 × 11,317.99
  4. Step 4: Simplify right side
    20,269.92x = 316,579,346.41
  5. Step 5: Solve for x
    x = 316,579,346.41/20,269.92
  6. Step 6: Final answer
    x = 15,618.18

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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.