Home / 11,918.16-16,445.28-6,612.96

Finding the Fourth Proportional to 11,918.16, 16,445.28 and 6,612.96

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Solution

The fourth proportional to 11,918.16, 16,445.28 and 6,612.96 is: 9,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.16 : 16,445.28 = 6,612.96 : x
  2. Step 2: Convert to fraction form
    11,918.16/16,445.28 = 6,612.96/x
  3. Step 3: Cross multiply
    11,918.16x = 16,445.28 × 6,612.96
  4. Step 4: Simplify right side
    11,918.16x = 108,751,978.83
  5. Step 5: Solve for x
    x = 108,751,978.83/11,918.16
  6. Step 6: Final answer
    x = 9,124.90

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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.