Home / 13,636.76-18,810.57-8,322.35

Finding the Fourth Proportional to 13,636.76, 18,810.57 and 8,322.35

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Solution

The fourth proportional to 13,636.76, 18,810.57 and 8,322.35 is: 11,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.76 : 18,810.57 = 8,322.35 : x
  2. Step 2: Convert to fraction form
    13,636.76/18,810.57 = 8,322.35/x
  3. Step 3: Cross multiply
    13,636.76x = 18,810.57 × 8,322.35
  4. Step 4: Simplify right side
    13,636.76x = 156,548,147.24
  5. Step 5: Solve for x
    x = 156,548,147.24/13,636.76
  6. Step 6: Final answer
    x = 11,479.86

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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.