Home / 19,138.56-26,408.48-10,640.16

Finding the Fourth Proportional to 19,138.56, 26,408.48 and 10,640.16

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Solution

The fourth proportional to 19,138.56, 26,408.48 and 10,640.16 is: 14,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.56 : 26,408.48 = 10,640.16 : x
  2. Step 2: Convert to fraction form
    19,138.56/26,408.48 = 10,640.16/x
  3. Step 3: Cross multiply
    19,138.56x = 26,408.48 × 10,640.16
  4. Step 4: Simplify right side
    19,138.56x = 280,990,452.56
  5. Step 5: Solve for x
    x = 280,990,452.56/19,138.56
  6. Step 6: Final answer
    x = 14,681.90

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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.