Home / 15,742.14-21,724.10-8,668.56

Finding the Fourth Proportional to 15,742.14, 21,724.10 and 8,668.56

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Solution

The fourth proportional to 15,742.14, 21,724.10 and 8,668.56 is: 11,962.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.14 : 21,724.10 = 8,668.56 : x
  2. Step 2: Convert to fraction form
    15,742.14/21,724.10 = 8,668.56/x
  3. Step 3: Cross multiply
    15,742.14x = 21,724.10 × 8,668.56
  4. Step 4: Simplify right side
    15,742.14x = 188,316,664.30
  5. Step 5: Solve for x
    x = 188,316,664.30/15,742.14
  6. Step 6: Final answer
    x = 11,962.58

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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.