Home / 9,491.28-13,099.20-5,513.60

Finding the Fourth Proportional to 9,491.28, 13,099.20 and 5,513.60

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Solution

The fourth proportional to 9,491.28, 13,099.20 and 5,513.60 is: 7,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,491.28 : 13,099.20 = 5,513.60 : x
  2. Step 2: Convert to fraction form
    9,491.28/13,099.20 = 5,513.60/x
  3. Step 3: Cross multiply
    9,491.28x = 13,099.20 × 5,513.60
  4. Step 4: Simplify right side
    9,491.28x = 72,223,749.12
  5. Step 5: Solve for x
    x = 72,223,749.12/9,491.28
  6. Step 6: Final answer
    x = 7,609.48

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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.