Home / 19,151.72-26,410.81-12,778.57

Finding the Fourth Proportional to 19,151.72, 26,410.81 and 12,778.57

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Solution

The fourth proportional to 19,151.72, 26,410.81 and 12,778.57 is: 17,622.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,151.72 : 26,410.81 = 12,778.57 : x
  2. Step 2: Convert to fraction form
    19,151.72/26,410.81 = 12,778.57/x
  3. Step 3: Cross multiply
    19,151.72x = 26,410.81 × 12,778.57
  4. Step 4: Simplify right side
    19,151.72x = 337,492,188.39
  5. Step 5: Solve for x
    x = 337,492,188.39/19,151.72
  6. Step 6: Final answer
    x = 17,622.03

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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.