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Finding the Fourth Proportional to 17,194.90, 25,792.35 and 12,820.90

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Solution

The fourth proportional to 17,194.90, 25,792.35 and 12,820.90 is: 19,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,194.90 : 25,792.35 = 12,820.90 : x
  2. Step 2: Convert to fraction form
    17,194.90/25,792.35 = 12,820.90/x
  3. Step 3: Cross multiply
    17,194.90x = 25,792.35 × 12,820.90
  4. Step 4: Simplify right side
    17,194.90x = 330,681,140.12
  5. Step 5: Solve for x
    x = 330,681,140.12/17,194.90
  6. Step 6: Final answer
    x = 19,231.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.