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Finding the Fourth Proportional to 13,865.84, 20,798.52 and 3,477.44

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Solution

The fourth proportional to 13,865.84, 20,798.52 and 3,477.44 is: 5,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.84 : 20,798.52 = 3,477.44 : x
  2. Step 2: Convert to fraction form
    13,865.84/20,798.52 = 3,477.44/x
  3. Step 3: Cross multiply
    13,865.84x = 20,798.52 × 3,477.44
  4. Step 4: Simplify right side
    13,865.84x = 72,325,605.39
  5. Step 5: Solve for x
    x = 72,325,605.39/13,865.84
  6. Step 6: Final answer
    x = 5,216.10

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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.