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Finding the Fourth Proportional to 11,955.60, 16,500.03 and 6,919.74

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Solution

The fourth proportional to 11,955.60, 16,500.03 and 6,919.74 is: 9,549.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,955.60 : 16,500.03 = 6,919.74 : x
  2. Step 2: Convert to fraction form
    11,955.60/16,500.03 = 6,919.74/x
  3. Step 3: Cross multiply
    11,955.60x = 16,500.03 × 6,919.74
  4. Step 4: Simplify right side
    11,955.60x = 114,175,917.59
  5. Step 5: Solve for x
    x = 114,175,917.59/11,955.60
  6. Step 6: Final answer
    x = 9,549.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.