Home / 15,743.64-21,725.24-8,670.05

Finding the Fourth Proportional to 15,743.64, 21,725.24 and 8,670.05

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Solution

The fourth proportional to 15,743.64, 21,725.24 and 8,670.05 is: 11,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.64 : 21,725.24 = 8,670.05 : x
  2. Step 2: Convert to fraction form
    15,743.64/21,725.24 = 8,670.05/x
  3. Step 3: Cross multiply
    15,743.64x = 21,725.24 × 8,670.05
  4. Step 4: Simplify right side
    15,743.64x = 188,358,917.06
  5. Step 5: Solve for x
    x = 188,358,917.06/15,743.64
  6. Step 6: Final answer
    x = 11,964.13

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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.