Home / 9,489.22-13,099.56-5,509.56

Finding the Fourth Proportional to 9,489.22, 13,099.56 and 5,509.56

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Solution

The fourth proportional to 9,489.22, 13,099.56 and 5,509.56 is: 7,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,489.22 : 13,099.56 = 5,509.56 : x
  2. Step 2: Convert to fraction form
    9,489.22/13,099.56 = 5,509.56/x
  3. Step 3: Cross multiply
    9,489.22x = 13,099.56 × 5,509.56
  4. Step 4: Simplify right side
    9,489.22x = 72,172,811.79
  5. Step 5: Solve for x
    x = 72,172,811.79/9,489.22
  6. Step 6: Final answer
    x = 7,605.77

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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.