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Finding the Fourth Proportional to 10,756.60, 16,134.90 and 9,914.20

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Solution

The fourth proportional to 10,756.60, 16,134.90 and 9,914.20 is: 14,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,756.60 : 16,134.90 = 9,914.20 : x
  2. Step 2: Convert to fraction form
    10,756.60/16,134.90 = 9,914.20/x
  3. Step 3: Cross multiply
    10,756.60x = 16,134.90 × 9,914.20
  4. Step 4: Simplify right side
    10,756.60x = 159,964,625.58
  5. Step 5: Solve for x
    x = 159,964,625.58/10,756.60
  6. Step 6: Final answer
    x = 14,871.30

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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.