Home / 21,427.82-29,568.74-11,995.10

Finding the Fourth Proportional to 21,427.82, 29,568.74 and 11,995.10

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Solution

The fourth proportional to 21,427.82, 29,568.74 and 11,995.10 is: 16,552.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.82 : 29,568.74 = 11,995.10 : x
  2. Step 2: Convert to fraction form
    21,427.82/29,568.74 = 11,995.10/x
  3. Step 3: Cross multiply
    21,427.82x = 29,568.74 × 11,995.10
  4. Step 4: Simplify right side
    21,427.82x = 354,679,993.17
  5. Step 5: Solve for x
    x = 354,679,993.17/21,427.82
  6. Step 6: Final answer
    x = 16,552.31

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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.