Home / 13,636.35-20,455.47-5,313.60

Finding the Fourth Proportional to 13,636.35, 20,455.47 and 5,313.60

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Solution

The fourth proportional to 13,636.35, 20,455.47 and 5,313.60 is: 7,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.35 : 20,455.47 = 5,313.60 : x
  2. Step 2: Convert to fraction form
    13,636.35/20,455.47 = 5,313.60/x
  3. Step 3: Cross multiply
    13,636.35x = 20,455.47 × 5,313.60
  4. Step 4: Simplify right side
    13,636.35x = 108,692,185.39
  5. Step 5: Solve for x
    x = 108,692,185.39/13,636.35
  6. Step 6: Final answer
    x = 7,970.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.