Home / 15,249.06-21,055.95-12,255.30

Finding the Fourth Proportional to 15,249.06, 21,055.95 and 12,255.30

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Solution

The fourth proportional to 15,249.06, 21,055.95 and 12,255.30 is: 16,922.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,249.06 : 21,055.95 = 12,255.30 : x
  2. Step 2: Convert to fraction form
    15,249.06/21,055.95 = 12,255.30/x
  3. Step 3: Cross multiply
    15,249.06x = 21,055.95 × 12,255.30
  4. Step 4: Simplify right side
    15,249.06x = 258,046,984.04
  5. Step 5: Solve for x
    x = 258,046,984.04/15,249.06
  6. Step 6: Final answer
    x = 16,922.16

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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.