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Finding the Fourth Proportional to 8,845.53, 13,268.32 and 8,402.10

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Solution

The fourth proportional to 8,845.53, 13,268.32 and 8,402.10 is: 12,603.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,845.53 : 13,268.32 = 8,402.10 : x
  2. Step 2: Convert to fraction form
    8,845.53/13,268.32 = 8,402.10/x
  3. Step 3: Cross multiply
    8,845.53x = 13,268.32 × 8,402.10
  4. Step 4: Simplify right side
    8,845.53x = 111,481,751.47
  5. Step 5: Solve for x
    x = 111,481,751.47/8,845.53
  6. Step 6: Final answer
    x = 12,603.17

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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.