Home / 13,289.94-18,339.46-7,321.45

Finding the Fourth Proportional to 13,289.94, 18,339.46 and 7,321.45

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Solution

The fourth proportional to 13,289.94, 18,339.46 and 7,321.45 is: 10,103.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.94 : 18,339.46 = 7,321.45 : x
  2. Step 2: Convert to fraction form
    13,289.94/18,339.46 = 7,321.45/x
  3. Step 3: Cross multiply
    13,289.94x = 18,339.46 × 7,321.45
  4. Step 4: Simplify right side
    13,289.94x = 134,271,439.42
  5. Step 5: Solve for x
    x = 134,271,439.42/13,289.94
  6. Step 6: Final answer
    x = 10,103.24

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Similar ratio
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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.