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Finding the Fourth Proportional to 10,886.60, 16,329.90 and 9,914.60

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Solution

The fourth proportional to 10,886.60, 16,329.90 and 9,914.60 is: 14,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.60 : 16,329.90 = 9,914.60 : x
  2. Step 2: Convert to fraction form
    10,886.60/16,329.90 = 9,914.60/x
  3. Step 3: Cross multiply
    10,886.60x = 16,329.90 × 9,914.60
  4. Step 4: Simplify right side
    10,886.60x = 161,904,426.54
  5. Step 5: Solve for x
    x = 161,904,426.54/10,886.60
  6. Step 6: Final answer
    x = 14,871.90

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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.