Home / 13,321.48-18,384.54-7,658.08

Finding the Fourth Proportional to 13,321.48, 18,384.54 and 7,658.08

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Solution

The fourth proportional to 13,321.48, 18,384.54 and 7,658.08 is: 10,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.48 : 18,384.54 = 7,658.08 : x
  2. Step 2: Convert to fraction form
    13,321.48/18,384.54 = 7,658.08/x
  3. Step 3: Cross multiply
    13,321.48x = 18,384.54 × 7,658.08
  4. Step 4: Simplify right side
    13,321.48x = 140,790,278.08
  5. Step 5: Solve for x
    x = 140,790,278.08/13,321.48
  6. Step 6: Final answer
    x = 10,568.67

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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.