Home / 19,129.14-26,388.45-12,418.56

Finding the Fourth Proportional to 19,129.14, 26,388.45 and 12,418.56

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Solution

The fourth proportional to 19,129.14, 26,388.45 and 12,418.56 is: 17,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.14 : 26,388.45 = 12,418.56 : x
  2. Step 2: Convert to fraction form
    19,129.14/26,388.45 = 12,418.56/x
  3. Step 3: Cross multiply
    19,129.14x = 26,388.45 × 12,418.56
  4. Step 4: Simplify right side
    19,129.14x = 327,706,549.63
  5. Step 5: Solve for x
    x = 327,706,549.63/19,129.14
  6. Step 6: Final answer
    x = 17,131.27

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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.