Home / 11,946.72-16,489.26-6,643.56

Finding the Fourth Proportional to 11,946.72, 16,489.26 and 6,643.56

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Solution

The fourth proportional to 11,946.72, 16,489.26 and 6,643.56 is: 9,169.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,946.72 : 16,489.26 = 6,643.56 : x
  2. Step 2: Convert to fraction form
    11,946.72/16,489.26 = 6,643.56/x
  3. Step 3: Cross multiply
    11,946.72x = 16,489.26 × 6,643.56
  4. Step 4: Simplify right side
    11,946.72x = 109,547,388.17
  5. Step 5: Solve for x
    x = 109,547,388.17/11,946.72
  6. Step 6: Final answer
    x = 9,169.66

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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.