Home / 14,115.39-19,479.20-8,147.05

Finding the Fourth Proportional to 14,115.39, 19,479.20 and 8,147.05

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Solution

The fourth proportional to 14,115.39, 19,479.20 and 8,147.05 is: 11,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.39 : 19,479.20 = 8,147.05 : x
  2. Step 2: Convert to fraction form
    14,115.39/19,479.20 = 8,147.05/x
  3. Step 3: Cross multiply
    14,115.39x = 19,479.20 × 8,147.05
  4. Step 4: Simplify right side
    14,115.39x = 158,698,016.36
  5. Step 5: Solve for x
    x = 158,698,016.36/14,115.39
  6. Step 6: Final answer
    x = 11,242.91

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Half scale
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Double scale
Find fourth proportional to 14,116.39, 19,480.58 and 8,148.05
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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.