Home / 11,681.28-16,120.62-6,965.46

Finding the Fourth Proportional to 11,681.28, 16,120.62 and 6,965.46

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Solution

The fourth proportional to 11,681.28, 16,120.62 and 6,965.46 is: 9,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.28 : 16,120.62 = 6,965.46 : x
  2. Step 2: Convert to fraction form
    11,681.28/16,120.62 = 6,965.46/x
  3. Step 3: Cross multiply
    11,681.28x = 16,120.62 × 6,965.46
  4. Step 4: Simplify right side
    11,681.28x = 112,287,533.79
  5. Step 5: Solve for x
    x = 112,287,533.79/11,681.28
  6. Step 6: Final answer
    x = 9,612.61

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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.