Home / 15,449.88-21,319.56-8,736.20

Finding the Fourth Proportional to 15,449.88, 21,319.56 and 8,736.20

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Solution

The fourth proportional to 15,449.88, 21,319.56 and 8,736.20 is: 12,055.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.88 : 21,319.56 = 8,736.20 : x
  2. Step 2: Convert to fraction form
    15,449.88/21,319.56 = 8,736.20/x
  3. Step 3: Cross multiply
    15,449.88x = 21,319.56 × 8,736.20
  4. Step 4: Simplify right side
    15,449.88x = 186,251,833.47
  5. Step 5: Solve for x
    x = 186,251,833.47/15,449.88
  6. Step 6: Final answer
    x = 12,055.23

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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.