Home / 9,739.20-13,425.60-6,902.40

Finding the Fourth Proportional to 9,739.20, 13,425.60 and 6,902.40

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Solution

The fourth proportional to 9,739.20, 13,425.60 and 6,902.40 is: 9,515.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,739.20 : 13,425.60 = 6,902.40 : x
  2. Step 2: Convert to fraction form
    9,739.20/13,425.60 = 6,902.40/x
  3. Step 3: Cross multiply
    9,739.20x = 13,425.60 × 6,902.40
  4. Step 4: Simplify right side
    9,739.20x = 92,668,861.44
  5. Step 5: Solve for x
    x = 92,668,861.44/9,739.20
  6. Step 6: Final answer
    x = 9,515.04

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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.