Home / 21,427.36-29,569.80-11,996.08

Finding the Fourth Proportional to 21,427.36, 29,569.80 and 11,996.08

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Solution

The fourth proportional to 21,427.36, 29,569.80 and 11,996.08 is: 16,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.36 : 29,569.80 = 11,996.08 : x
  2. Step 2: Convert to fraction form
    21,427.36/29,569.80 = 11,996.08/x
  3. Step 3: Cross multiply
    21,427.36x = 29,569.80 × 11,996.08
  4. Step 4: Simplify right side
    21,427.36x = 354,721,686.38
  5. Step 5: Solve for x
    x = 354,721,686.38/21,427.36
  6. Step 6: Final answer
    x = 16,554.61

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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.