Home / 21,074.08-29,081.04-11,512.12

Finding the Fourth Proportional to 21,074.08, 29,081.04 and 11,512.12

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Solution

The fourth proportional to 21,074.08, 29,081.04 and 11,512.12 is: 15,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.08 : 29,081.04 = 11,512.12 : x
  2. Step 2: Convert to fraction form
    21,074.08/29,081.04 = 11,512.12/x
  3. Step 3: Cross multiply
    21,074.08x = 29,081.04 × 11,512.12
  4. Step 4: Simplify right side
    21,074.08x = 334,784,422.20
  5. Step 5: Solve for x
    x = 334,784,422.20/21,074.08
  6. Step 6: Final answer
    x = 15,886.08

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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.