Home / 11,130.75-15,360.44-6,415.34

Finding the Fourth Proportional to 11,130.75, 15,360.44 and 6,415.34

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Solution

The fourth proportional to 11,130.75, 15,360.44 and 6,415.34 is: 8,853.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.75 : 15,360.44 = 6,415.34 : x
  2. Step 2: Convert to fraction form
    11,130.75/15,360.44 = 6,415.34/x
  3. Step 3: Cross multiply
    11,130.75x = 15,360.44 × 6,415.34
  4. Step 4: Simplify right side
    11,130.75x = 98,542,336.27
  5. Step 5: Solve for x
    x = 98,542,336.27/11,130.75
  6. Step 6: Final answer
    x = 8,853.16

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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.