Home / 11,971.60-16,520.79-6,666.88

Finding the Fourth Proportional to 11,971.60, 16,520.79 and 6,666.88

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Solution

The fourth proportional to 11,971.60, 16,520.79 and 6,666.88 is: 9,200.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.60 : 16,520.79 = 6,666.88 : x
  2. Step 2: Convert to fraction form
    11,971.60/16,520.79 = 6,666.88/x
  3. Step 3: Cross multiply
    11,971.60x = 16,520.79 × 6,666.88
  4. Step 4: Simplify right side
    11,971.60x = 110,142,124.44
  5. Step 5: Solve for x
    x = 110,142,124.44/11,971.60
  6. Step 6: Final answer
    x = 9,200.28

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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.