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Finding the Fourth Proportional to 13,661.16, 20,476.98 and 6,626.32

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Solution

The fourth proportional to 13,661.16, 20,476.98 and 6,626.32 is: 9,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.16 : 20,476.98 = 6,626.32 : x
  2. Step 2: Convert to fraction form
    13,661.16/20,476.98 = 6,626.32/x
  3. Step 3: Cross multiply
    13,661.16x = 20,476.98 × 6,626.32
  4. Step 4: Simplify right side
    13,661.16x = 135,687,022.11
  5. Step 5: Solve for x
    x = 135,687,022.11/13,661.16
  6. Step 6: Final answer
    x = 9,932.32

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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.