Home / 21,402.51-29,536.83-11,971.14

Finding the Fourth Proportional to 21,402.51, 29,536.83 and 11,971.14

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Solution

The fourth proportional to 21,402.51, 29,536.83 and 11,971.14 is: 16,520.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.51 : 29,536.83 = 11,971.14 : x
  2. Step 2: Convert to fraction form
    21,402.51/29,536.83 = 11,971.14/x
  3. Step 3: Cross multiply
    21,402.51x = 29,536.83 × 11,971.14
  4. Step 4: Simplify right side
    21,402.51x = 353,589,527.09
  5. Step 5: Solve for x
    x = 353,589,527.09/21,402.51
  6. Step 6: Final answer
    x = 16,520.94

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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.