Home / 11,220.06-15,483.60-6,115.57

Finding the Fourth Proportional to 11,220.06, 15,483.60 and 6,115.57

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Solution

The fourth proportional to 11,220.06, 15,483.60 and 6,115.57 is: 8,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.06 : 15,483.60 = 6,115.57 : x
  2. Step 2: Convert to fraction form
    11,220.06/15,483.60 = 6,115.57/x
  3. Step 3: Cross multiply
    11,220.06x = 15,483.60 × 6,115.57
  4. Step 4: Simplify right side
    11,220.06x = 94,690,978.01
  5. Step 5: Solve for x
    x = 94,690,978.01/11,220.06
  6. Step 6: Final answer
    x = 8,439.43

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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.