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Finding the Fourth Proportional to 10,862.60, 16,269.60 and 8,918.60

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Solution

The fourth proportional to 10,862.60, 16,269.60 and 8,918.60 is: 13,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.60 : 16,269.60 = 8,918.60 : x
  2. Step 2: Convert to fraction form
    10,862.60/16,269.60 = 8,918.60/x
  3. Step 3: Cross multiply
    10,862.60x = 16,269.60 × 8,918.60
  4. Step 4: Simplify right side
    10,862.60x = 145,102,054.56
  5. Step 5: Solve for x
    x = 145,102,054.56/10,862.60
  6. Step 6: Final answer
    x = 13,357.95

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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.