Home / 21,157.19-29,196.87-11,725.82

Finding the Fourth Proportional to 21,157.19, 29,196.87 and 11,725.82

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Solution

The fourth proportional to 21,157.19, 29,196.87 and 11,725.82 is: 16,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.19 : 29,196.87 = 11,725.82 : x
  2. Step 2: Convert to fraction form
    21,157.19/29,196.87 = 11,725.82/x
  3. Step 3: Cross multiply
    21,157.19x = 29,196.87 × 11,725.82
  4. Step 4: Simplify right side
    21,157.19x = 342,357,242.18
  5. Step 5: Solve for x
    x = 342,357,242.18/21,157.19
  6. Step 6: Final answer
    x = 16,181.60

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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.