Home / 12,351.34-18,521.40-5,328.03

Finding the Fourth Proportional to 12,351.34, 18,521.40 and 5,328.03

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Solution

The fourth proportional to 12,351.34, 18,521.40 and 5,328.03 is: 7,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.34 : 18,521.40 = 5,328.03 : x
  2. Step 2: Convert to fraction form
    12,351.34/18,521.40 = 5,328.03/x
  3. Step 3: Cross multiply
    12,351.34x = 18,521.40 × 5,328.03
  4. Step 4: Simplify right side
    12,351.34x = 98,682,574.84
  5. Step 5: Solve for x
    x = 98,682,574.84/12,351.34
  6. Step 6: Final answer
    x = 7,989.62

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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.