Home / 15,739.44-21,719.52-8,664.92

Finding the Fourth Proportional to 15,739.44, 21,719.52 and 8,664.92

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Solution

The fourth proportional to 15,739.44, 21,719.52 and 8,664.92 is: 11,957.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.44 : 21,719.52 = 8,664.92 : x
  2. Step 2: Convert to fraction form
    15,739.44/21,719.52 = 8,664.92/x
  3. Step 3: Cross multiply
    15,739.44x = 21,719.52 × 8,664.92
  4. Step 4: Simplify right side
    15,739.44x = 188,197,903.24
  5. Step 5: Solve for x
    x = 188,197,903.24/15,739.44
  6. Step 6: Final answer
    x = 11,957.09

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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.