Home / 21,004.97-28,987.52-12,054.11

Finding the Fourth Proportional to 21,004.97, 28,987.52 and 12,054.11

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Solution

The fourth proportional to 21,004.97, 28,987.52 and 12,054.11 is: 16,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.97 : 28,987.52 = 12,054.11 : x
  2. Step 2: Convert to fraction form
    21,004.97/28,987.52 = 12,054.11/x
  3. Step 3: Cross multiply
    21,004.97x = 28,987.52 × 12,054.11
  4. Step 4: Simplify right side
    21,004.97x = 349,418,694.44
  5. Step 5: Solve for x
    x = 349,418,694.44/21,004.97
  6. Step 6: Final answer
    x = 16,635.05

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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.