Home / 11,886.27-16,405.65-7,853.76

Finding the Fourth Proportional to 11,886.27, 16,405.65 and 7,853.76

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Solution

The fourth proportional to 11,886.27, 16,405.65 and 7,853.76 is: 10,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.27 : 16,405.65 = 7,853.76 : x
  2. Step 2: Convert to fraction form
    11,886.27/16,405.65 = 7,853.76/x
  3. Step 3: Cross multiply
    11,886.27x = 16,405.65 × 7,853.76
  4. Step 4: Simplify right side
    11,886.27x = 128,846,037.74
  5. Step 5: Solve for x
    x = 128,846,037.74/11,886.27
  6. Step 6: Final answer
    x = 10,839.91

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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.