Home / 9,727.20-13,430.96-7,485.60

Finding the Fourth Proportional to 9,727.20, 13,430.96 and 7,485.60

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Solution

The fourth proportional to 9,727.20, 13,430.96 and 7,485.60 is: 10,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,727.20 : 13,430.96 = 7,485.60 : x
  2. Step 2: Convert to fraction form
    9,727.20/13,430.96 = 7,485.60/x
  3. Step 3: Cross multiply
    9,727.20x = 13,430.96 × 7,485.60
  4. Step 4: Simplify right side
    9,727.20x = 100,538,794.18
  5. Step 5: Solve for x
    x = 100,538,794.18/9,727.20
  6. Step 6: Final answer
    x = 10,335.84

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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.