Home / 21,402.19-29,534.07-11,842.61

Finding the Fourth Proportional to 21,402.19, 29,534.07 and 11,842.61

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Solution

The fourth proportional to 21,402.19, 29,534.07 and 11,842.61 is: 16,342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.19 : 29,534.07 = 11,842.61 : x
  2. Step 2: Convert to fraction form
    21,402.19/29,534.07 = 11,842.61/x
  3. Step 3: Cross multiply
    21,402.19x = 29,534.07 × 11,842.61
  4. Step 4: Simplify right side
    21,402.19x = 349,760,302.85
  5. Step 5: Solve for x
    x = 349,760,302.85/21,402.19
  6. Step 6: Final answer
    x = 16,342.27

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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.