Home / 21,427.14-29,569.41-11,995.50

Finding the Fourth Proportional to 21,427.14, 29,569.41 and 11,995.50

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Solution

The fourth proportional to 21,427.14, 29,569.41 and 11,995.50 is: 16,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.14 : 29,569.41 = 11,995.50 : x
  2. Step 2: Convert to fraction form
    21,427.14/29,569.41 = 11,995.50/x
  3. Step 3: Cross multiply
    21,427.14x = 29,569.41 × 11,995.50
  4. Step 4: Simplify right side
    21,427.14x = 354,699,857.66
  5. Step 5: Solve for x
    x = 354,699,857.66/21,427.14
  6. Step 6: Final answer
    x = 16,553.77

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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.