Home / 9,519.75-13,137.30-5,328.81

Finding the Fourth Proportional to 9,519.75, 13,137.30 and 5,328.81

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Solution

The fourth proportional to 9,519.75, 13,137.30 and 5,328.81 is: 7,353.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,519.75 : 13,137.30 = 5,328.81 : x
  2. Step 2: Convert to fraction form
    9,519.75/13,137.30 = 5,328.81/x
  3. Step 3: Cross multiply
    9,519.75x = 13,137.30 × 5,328.81
  4. Step 4: Simplify right side
    9,519.75x = 70,006,175.61
  5. Step 5: Solve for x
    x = 70,006,175.61/9,519.75
  6. Step 6: Final answer
    x = 7,353.78

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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.