Home / 13,208.67-18,227.13-7,239.20

Finding the Fourth Proportional to 13,208.67, 18,227.13 and 7,239.20

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Solution

The fourth proportional to 13,208.67, 18,227.13 and 7,239.20 is: 9,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.67 : 18,227.13 = 7,239.20 : x
  2. Step 2: Convert to fraction form
    13,208.67/18,227.13 = 7,239.20/x
  3. Step 3: Cross multiply
    13,208.67x = 18,227.13 × 7,239.20
  4. Step 4: Simplify right side
    13,208.67x = 131,949,748.36
  5. Step 5: Solve for x
    x = 131,949,748.36/13,208.67
  6. Step 6: Final answer
    x = 9,989.63

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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.