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Finding the Fourth Proportional to 13,364.76, 18,445.41 and 8,329.80

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Solution

The fourth proportional to 13,364.76, 18,445.41 and 8,329.80 is: 11,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.76 : 18,445.41 = 8,329.80 : x
  2. Step 2: Convert to fraction form
    13,364.76/18,445.41 = 8,329.80/x
  3. Step 3: Cross multiply
    13,364.76x = 18,445.41 × 8,329.80
  4. Step 4: Simplify right side
    13,364.76x = 153,646,576.22
  5. Step 5: Solve for x
    x = 153,646,576.22/13,364.76
  6. Step 6: Final answer
    x = 11,496.40

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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.