Home / 11,113.90-15,336.73-6,078.30

Finding the Fourth Proportional to 11,113.90, 15,336.73 and 6,078.30

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Solution

The fourth proportional to 11,113.90, 15,336.73 and 6,078.30 is: 8,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.90 : 15,336.73 = 6,078.30 : x
  2. Step 2: Convert to fraction form
    11,113.90/15,336.73 = 6,078.30/x
  3. Step 3: Cross multiply
    11,113.90x = 15,336.73 × 6,078.30
  4. Step 4: Simplify right side
    11,113.90x = 93,221,245.96
  5. Step 5: Solve for x
    x = 93,221,245.96/11,113.90
  6. Step 6: Final answer
    x = 8,387.81

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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.