Home / 12,188.48-16,820.32-6,883.36

Finding the Fourth Proportional to 12,188.48, 16,820.32 and 6,883.36

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Solution

The fourth proportional to 12,188.48, 16,820.32 and 6,883.36 is: 9,499.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.48 : 16,820.32 = 6,883.36 : x
  2. Step 2: Convert to fraction form
    12,188.48/16,820.32 = 6,883.36/x
  3. Step 3: Cross multiply
    12,188.48x = 16,820.32 × 6,883.36
  4. Step 4: Simplify right side
    12,188.48x = 115,780,317.88
  5. Step 5: Solve for x
    x = 115,780,317.88/12,188.48
  6. Step 6: Final answer
    x = 9,499.16

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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.