Home / 21,313.29-31,979.15-11,441.04

Finding the Fourth Proportional to 21,313.29, 31,979.15 and 11,441.04

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Solution

The fourth proportional to 21,313.29, 31,979.15 and 11,441.04 is: 17,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.29 : 31,979.15 = 11,441.04 : x
  2. Step 2: Convert to fraction form
    21,313.29/31,979.15 = 11,441.04/x
  3. Step 3: Cross multiply
    21,313.29x = 31,979.15 × 11,441.04
  4. Step 4: Simplify right side
    21,313.29x = 365,874,734.32
  5. Step 5: Solve for x
    x = 365,874,734.32/21,313.29
  6. Step 6: Final answer
    x = 17,166.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.