Home / 13,219-18,242.94-7,631.80

Finding the Fourth Proportional to 13,219, 18,242.94 and 7,631.80

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Solution

The fourth proportional to 13,219, 18,242.94 and 7,631.80 is: 10,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219 : 18,242.94 = 7,631.80 : x
  2. Step 2: Convert to fraction form
    13,219/18,242.94 = 7,631.80/x
  3. Step 3: Cross multiply
    13,219x = 18,242.94 × 7,631.80
  4. Step 4: Simplify right side
    13,219x = 139,226,469.49
  5. Step 5: Solve for x
    x = 139,226,469.49/13,219
  6. Step 6: Final answer
    x = 10,532.30

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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.