Home / 12,166.08-16,789.28-6,861

Finding the Fourth Proportional to 12,166.08, 16,789.28 and 6,861

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Solution

The fourth proportional to 12,166.08, 16,789.28 and 6,861 is: 9,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,166.08 : 16,789.28 = 6,861 : x
  2. Step 2: Convert to fraction form
    12,166.08/16,789.28 = 6,861/x
  3. Step 3: Cross multiply
    12,166.08x = 16,789.28 × 6,861
  4. Step 4: Simplify right side
    12,166.08x = 115,191,250.08
  5. Step 5: Solve for x
    x = 115,191,250.08/12,166.08
  6. Step 6: Final answer
    x = 9,468.23

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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.