Home / 21,322.14-29,424.72-11,890.92

Finding the Fourth Proportional to 21,322.14, 29,424.72 and 11,890.92

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Solution

The fourth proportional to 21,322.14, 29,424.72 and 11,890.92 is: 16,409.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.14 : 29,424.72 = 11,890.92 : x
  2. Step 2: Convert to fraction form
    21,322.14/29,424.72 = 11,890.92/x
  3. Step 3: Cross multiply
    21,322.14x = 29,424.72 × 11,890.92
  4. Step 4: Simplify right side
    21,322.14x = 349,886,991.54
  5. Step 5: Solve for x
    x = 349,886,991.54/21,322.14
  6. Step 6: Final answer
    x = 16,409.56

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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.