Home / 21,090.70-29,101.98-11,659.33

Finding the Fourth Proportional to 21,090.70, 29,101.98 and 11,659.33

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Solution

The fourth proportional to 21,090.70, 29,101.98 and 11,659.33 is: 16,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.70 : 29,101.98 = 11,659.33 : x
  2. Step 2: Convert to fraction form
    21,090.70/29,101.98 = 11,659.33/x
  3. Step 3: Cross multiply
    21,090.70x = 29,101.98 × 11,659.33
  4. Step 4: Simplify right side
    21,090.70x = 339,309,588.47
  5. Step 5: Solve for x
    x = 339,309,588.47/21,090.70
  6. Step 6: Final answer
    x = 16,088.11

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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.