Home / 11,941.72-16,478.94-6,636.40

Finding the Fourth Proportional to 11,941.72, 16,478.94 and 6,636.40

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Solution

The fourth proportional to 11,941.72, 16,478.94 and 6,636.40 is: 9,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,941.72 : 16,478.94 = 6,636.40 : x
  2. Step 2: Convert to fraction form
    11,941.72/16,478.94 = 6,636.40/x
  3. Step 3: Cross multiply
    11,941.72x = 16,478.94 × 6,636.40
  4. Step 4: Simplify right side
    11,941.72x = 109,360,837.42
  5. Step 5: Solve for x
    x = 109,360,837.42/11,941.72
  6. Step 6: Final answer
    x = 9,157.88

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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.