Home / 13,313.52-18,381.90-8,280

Finding the Fourth Proportional to 13,313.52, 18,381.90 and 8,280

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Solution

The fourth proportional to 13,313.52, 18,381.90 and 8,280 is: 11,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.52 : 18,381.90 = 8,280 : x
  2. Step 2: Convert to fraction form
    13,313.52/18,381.90 = 8,280/x
  3. Step 3: Cross multiply
    13,313.52x = 18,381.90 × 8,280
  4. Step 4: Simplify right side
    13,313.52x = 152,202,132
  5. Step 5: Solve for x
    x = 152,202,132/13,313.52
  6. Step 6: Final answer
    x = 11,432.15

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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.