Home / 13,384.20-18,469.80-7,416.12

Finding the Fourth Proportional to 13,384.20, 18,469.80 and 7,416.12

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Solution

The fourth proportional to 13,384.20, 18,469.80 and 7,416.12 is: 10,234.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.20 : 18,469.80 = 7,416.12 : x
  2. Step 2: Convert to fraction form
    13,384.20/18,469.80 = 7,416.12/x
  3. Step 3: Cross multiply
    13,384.20x = 18,469.80 × 7,416.12
  4. Step 4: Simplify right side
    13,384.20x = 136,974,253.18
  5. Step 5: Solve for x
    x = 136,974,253.18/13,384.20
  6. Step 6: Final answer
    x = 10,234.03

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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.