Home / 19,144.32-26,421.12-11,189.12

Finding the Fourth Proportional to 19,144.32, 26,421.12 and 11,189.12

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Solution

The fourth proportional to 19,144.32, 26,421.12 and 11,189.12 is: 15,442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.32 : 26,421.12 = 11,189.12 : x
  2. Step 2: Convert to fraction form
    19,144.32/26,421.12 = 11,189.12/x
  3. Step 3: Cross multiply
    19,144.32x = 26,421.12 × 11,189.12
  4. Step 4: Simplify right side
    19,144.32x = 295,629,082.21
  5. Step 5: Solve for x
    x = 295,629,082.21/19,144.32
  6. Step 6: Final answer
    x = 15,442.13

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Half scale
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Double scale
Find fourth proportional to 19,145.32, 26,422.50 and 11,190.12
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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.