Home / 21,282.75-29,370.20-11,853.14

Finding the Fourth Proportional to 21,282.75, 29,370.20 and 11,853.14

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Solution

The fourth proportional to 21,282.75, 29,370.20 and 11,853.14 is: 16,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.75 : 29,370.20 = 11,853.14 : x
  2. Step 2: Convert to fraction form
    21,282.75/29,370.20 = 11,853.14/x
  3. Step 3: Cross multiply
    21,282.75x = 29,370.20 × 11,853.14
  4. Step 4: Simplify right side
    21,282.75x = 348,128,886.31
  5. Step 5: Solve for x
    x = 348,128,886.31/21,282.75
  6. Step 6: Final answer
    x = 16,357.33

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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.