Home / 11,681.40-16,120.32-6,965.88

Finding the Fourth Proportional to 11,681.40, 16,120.32 and 6,965.88

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Solution

The fourth proportional to 11,681.40, 16,120.32 and 6,965.88 is: 9,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.40 : 16,120.32 = 6,965.88 : x
  2. Step 2: Convert to fraction form
    11,681.40/16,120.32 = 6,965.88/x
  3. Step 3: Cross multiply
    11,681.40x = 16,120.32 × 6,965.88
  4. Step 4: Simplify right side
    11,681.40x = 112,292,214.68
  5. Step 5: Solve for x
    x = 112,292,214.68/11,681.40
  6. Step 6: Final answer
    x = 9,612.91

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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.