Home / 9,621.20-14,442.60-7,439.60

Finding the Fourth Proportional to 9,621.20, 14,442.60 and 7,439.60

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Solution

The fourth proportional to 9,621.20, 14,442.60 and 7,439.60 is: 11,167.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.20 : 14,442.60 = 7,439.60 : x
  2. Step 2: Convert to fraction form
    9,621.20/14,442.60 = 7,439.60/x
  3. Step 3: Cross multiply
    9,621.20x = 14,442.60 × 7,439.60
  4. Step 4: Simplify right side
    9,621.20x = 107,447,166.96
  5. Step 5: Solve for x
    x = 107,447,166.96/9,621.20
  6. Step 6: Final answer
    x = 11,167.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.