Home / 15,742.16-21,709.19-12,151.38

Finding the Fourth Proportional to 15,742.16, 21,709.19 and 12,151.38

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Solution

The fourth proportional to 15,742.16, 21,709.19 and 12,151.38 is: 16,757.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.16 : 21,709.19 = 12,151.38 : x
  2. Step 2: Convert to fraction form
    15,742.16/21,709.19 = 12,151.38/x
  3. Step 3: Cross multiply
    15,742.16x = 21,709.19 × 12,151.38
  4. Step 4: Simplify right side
    15,742.16x = 263,796,556.43
  5. Step 5: Solve for x
    x = 263,796,556.43/15,742.16
  6. Step 6: Final answer
    x = 16,757.33

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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.