Home / 21,322.87-31,944.32-17,835.29

Finding the Fourth Proportional to 21,322.87, 31,944.32 and 17,835.29

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Solution

The fourth proportional to 21,322.87, 31,944.32 and 17,835.29 is: 26,719.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.87 : 31,944.32 = 17,835.29 : x
  2. Step 2: Convert to fraction form
    21,322.87/31,944.32 = 17,835.29/x
  3. Step 3: Cross multiply
    21,322.87x = 31,944.32 × 17,835.29
  4. Step 4: Simplify right side
    21,322.87x = 569,736,249.15
  5. Step 5: Solve for x
    x = 569,736,249.15/21,322.87
  6. Step 6: Final answer
    x = 26,719.49

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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.