Home / 12,351.58-18,521.78-5,328.28

Finding the Fourth Proportional to 12,351.58, 18,521.78 and 5,328.28

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Solution

The fourth proportional to 12,351.58, 18,521.78 and 5,328.28 is: 7,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.58 : 18,521.78 = 5,328.28 : x
  2. Step 2: Convert to fraction form
    12,351.58/18,521.78 = 5,328.28/x
  3. Step 3: Cross multiply
    12,351.58x = 18,521.78 × 5,328.28
  4. Step 4: Simplify right side
    12,351.58x = 98,689,229.94
  5. Step 5: Solve for x
    x = 98,689,229.94/12,351.58
  6. Step 6: Final answer
    x = 7,990.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.