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Finding the Fourth Proportional to 8,893.52, 13,347.12 and 8,436.72

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Solution

The fourth proportional to 8,893.52, 13,347.12 and 8,436.72 is: 12,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.52 : 13,347.12 = 8,436.72 : x
  2. Step 2: Convert to fraction form
    8,893.52/13,347.12 = 8,436.72/x
  3. Step 3: Cross multiply
    8,893.52x = 13,347.12 × 8,436.72
  4. Step 4: Simplify right side
    8,893.52x = 112,605,914.25
  5. Step 5: Solve for x
    x = 112,605,914.25/8,893.52
  6. Step 6: Final answer
    x = 12,661.57

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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.