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Finding the Fourth Proportional to 13,327.50, 18,391.95 and 8,359.50

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Solution

The fourth proportional to 13,327.50, 18,391.95 and 8,359.50 is: 11,536.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.50 : 18,391.95 = 8,359.50 : x
  2. Step 2: Convert to fraction form
    13,327.50/18,391.95 = 8,359.50/x
  3. Step 3: Cross multiply
    13,327.50x = 18,391.95 × 8,359.50
  4. Step 4: Simplify right side
    13,327.50x = 153,747,506.03
  5. Step 5: Solve for x
    x = 153,747,506.03/13,327.50
  6. Step 6: Final answer
    x = 11,536.11

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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.