Home / 21,090.17-29,104.41-11,530.11

Finding the Fourth Proportional to 21,090.17, 29,104.41 and 11,530.11

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Solution

The fourth proportional to 21,090.17, 29,104.41 and 11,530.11 is: 15,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.17 : 29,104.41 = 11,530.11 : x
  2. Step 2: Convert to fraction form
    21,090.17/29,104.41 = 11,530.11/x
  3. Step 3: Cross multiply
    21,090.17x = 29,104.41 × 11,530.11
  4. Step 4: Simplify right side
    21,090.17x = 335,577,201.16
  5. Step 5: Solve for x
    x = 335,577,201.16/21,090.17
  6. Step 6: Final answer
    x = 15,911.54

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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.