Home / 13,331.47-18,398.20-8,028

Finding the Fourth Proportional to 13,331.47, 18,398.20 and 8,028

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Solution

The fourth proportional to 13,331.47, 18,398.20 and 8,028 is: 11,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.47 : 18,398.20 = 8,028 : x
  2. Step 2: Convert to fraction form
    13,331.47/18,398.20 = 8,028/x
  3. Step 3: Cross multiply
    13,331.47x = 18,398.20 × 8,028
  4. Step 4: Simplify right side
    13,331.47x = 147,700,749.60
  5. Step 5: Solve for x
    x = 147,700,749.60/13,331.47
  6. Step 6: Final answer
    x = 11,079.10

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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.