Home / 11,979.71-16,533.50-6,877.11

Finding the Fourth Proportional to 11,979.71, 16,533.50 and 6,877.11

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Solution

The fourth proportional to 11,979.71, 16,533.50 and 6,877.11 is: 9,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.71 : 16,533.50 = 6,877.11 : x
  2. Step 2: Convert to fraction form
    11,979.71/16,533.50 = 6,877.11/x
  3. Step 3: Cross multiply
    11,979.71x = 16,533.50 × 6,877.11
  4. Step 4: Simplify right side
    11,979.71x = 113,702,663.80
  5. Step 5: Solve for x
    x = 113,702,663.80/11,979.71
  6. Step 6: Final answer
    x = 9,491.27

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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.