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Finding the Fourth Proportional to 8,985.74, 13,399.43 and 8,362.44

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Solution

The fourth proportional to 8,985.74, 13,399.43 and 8,362.44 is: 12,469.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.74 : 13,399.43 = 8,362.44 : x
  2. Step 2: Convert to fraction form
    8,985.74/13,399.43 = 8,362.44/x
  3. Step 3: Cross multiply
    8,985.74x = 13,399.43 × 8,362.44
  4. Step 4: Simplify right side
    8,985.74x = 112,051,887.60
  5. Step 5: Solve for x
    x = 112,051,887.60/8,985.74
  6. Step 6: Final answer
    x = 12,469.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.