Home / 13,202.21-18,219.06-7,898.28

Finding the Fourth Proportional to 13,202.21, 18,219.06 and 7,898.28

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Solution

The fourth proportional to 13,202.21, 18,219.06 and 7,898.28 is: 10,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,202.21 : 18,219.06 = 7,898.28 : x
  2. Step 2: Convert to fraction form
    13,202.21/18,219.06 = 7,898.28/x
  3. Step 3: Cross multiply
    13,202.21x = 18,219.06 × 7,898.28
  4. Step 4: Simplify right side
    13,202.21x = 143,899,197.73
  5. Step 5: Solve for x
    x = 143,899,197.73/13,202.21
  6. Step 6: Final answer
    x = 10,899.63

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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.