Home / 15,256.22-21,051.15-8,542.13

Finding the Fourth Proportional to 15,256.22, 21,051.15 and 8,542.13

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Solution

The fourth proportional to 15,256.22, 21,051.15 and 8,542.13 is: 11,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.22 : 21,051.15 = 8,542.13 : x
  2. Step 2: Convert to fraction form
    15,256.22/21,051.15 = 8,542.13/x
  3. Step 3: Cross multiply
    15,256.22x = 21,051.15 × 8,542.13
  4. Step 4: Simplify right side
    15,256.22x = 179,821,659.95
  5. Step 5: Solve for x
    x = 179,821,659.95/15,256.22
  6. Step 6: Final answer
    x = 11,786.78

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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.