Home / 11,987.19-16,539.30-6,682.05

Finding the Fourth Proportional to 11,987.19, 16,539.30 and 6,682.05

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Solution

The fourth proportional to 11,987.19, 16,539.30 and 6,682.05 is: 9,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.19 : 16,539.30 = 6,682.05 : x
  2. Step 2: Convert to fraction form
    11,987.19/16,539.30 = 6,682.05/x
  3. Step 3: Cross multiply
    11,987.19x = 16,539.30 × 6,682.05
  4. Step 4: Simplify right side
    11,987.19x = 110,516,429.57
  5. Step 5: Solve for x
    x = 110,516,429.57/11,987.19
  6. Step 6: Final answer
    x = 9,219.54

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Half scale
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Double scale
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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.