Home / 11,149.58-15,386.90-6,370.31

Finding the Fourth Proportional to 11,149.58, 15,386.90 and 6,370.31

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Solution

The fourth proportional to 11,149.58, 15,386.90 and 6,370.31 is: 8,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.58 : 15,386.90 = 6,370.31 : x
  2. Step 2: Convert to fraction form
    11,149.58/15,386.90 = 6,370.31/x
  3. Step 3: Cross multiply
    11,149.58x = 15,386.90 × 6,370.31
  4. Step 4: Simplify right side
    11,149.58x = 98,019,329.55
  5. Step 5: Solve for x
    x = 98,019,329.55/11,149.58
  6. Step 6: Final answer
    x = 8,791.30

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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.