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Finding the Fourth Proportional to 13,751.22, 20,626.82 and 7,904.10

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Solution

The fourth proportional to 13,751.22, 20,626.82 and 7,904.10 is: 11,856.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.22 : 20,626.82 = 7,904.10 : x
  2. Step 2: Convert to fraction form
    13,751.22/20,626.82 = 7,904.10/x
  3. Step 3: Cross multiply
    13,751.22x = 20,626.82 × 7,904.10
  4. Step 4: Simplify right side
    13,751.22x = 163,036,447.96
  5. Step 5: Solve for x
    x = 163,036,447.96/13,751.22
  6. Step 6: Final answer
    x = 11,856.14

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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.