Home / 21,342.90-29,452.29-11,911.38

Finding the Fourth Proportional to 21,342.90, 29,452.29 and 11,911.38

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Solution

The fourth proportional to 21,342.90, 29,452.29 and 11,911.38 is: 16,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.90 : 29,452.29 = 11,911.38 : x
  2. Step 2: Convert to fraction form
    21,342.90/29,452.29 = 11,911.38/x
  3. Step 3: Cross multiply
    21,342.90x = 29,452.29 × 11,911.38
  4. Step 4: Simplify right side
    21,342.90x = 350,817,418.06
  5. Step 5: Solve for x
    x = 350,817,418.06/21,342.90
  6. Step 6: Final answer
    x = 16,437.20

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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.