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Finding the Fourth Proportional to 13,636.51, 20,454.16 and 4,276.32

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Solution

The fourth proportional to 13,636.51, 20,454.16 and 4,276.32 is: 6,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.51 : 20,454.16 = 4,276.32 : x
  2. Step 2: Convert to fraction form
    13,636.51/20,454.16 = 4,276.32/x
  3. Step 3: Cross multiply
    13,636.51x = 20,454.16 × 4,276.32
  4. Step 4: Simplify right side
    13,636.51x = 87,468,533.49
  5. Step 5: Solve for x
    x = 87,468,533.49/13,636.51
  6. Step 6: Final answer
    x = 6,414.29

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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.