Home / 11,917.45-16,445.86-6,612.15

Finding the Fourth Proportional to 11,917.45, 16,445.86 and 6,612.15

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Solution

The fourth proportional to 11,917.45, 16,445.86 and 6,612.15 is: 9,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.45 : 16,445.86 = 6,612.15 : x
  2. Step 2: Convert to fraction form
    11,917.45/16,445.86 = 6,612.15/x
  3. Step 3: Cross multiply
    11,917.45x = 16,445.86 × 6,612.15
  4. Step 4: Simplify right side
    11,917.45x = 108,742,460.14
  5. Step 5: Solve for x
    x = 108,742,460.14/11,917.45
  6. Step 6: Final answer
    x = 9,124.65

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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.