Home / 21,137.34-29,168.31-11,575.29

Finding the Fourth Proportional to 21,137.34, 29,168.31 and 11,575.29

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Solution

The fourth proportional to 21,137.34, 29,168.31 and 11,575.29 is: 15,973.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.34 : 29,168.31 = 11,575.29 : x
  2. Step 2: Convert to fraction form
    21,137.34/29,168.31 = 11,575.29/x
  3. Step 3: Cross multiply
    21,137.34x = 29,168.31 × 11,575.29
  4. Step 4: Simplify right side
    21,137.34x = 337,631,647.06
  5. Step 5: Solve for x
    x = 337,631,647.06/21,137.34
  6. Step 6: Final answer
    x = 15,973.23

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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.