Home / 13,845.77-20,768.81-4,485.71

Finding the Fourth Proportional to 13,845.77, 20,768.81 and 4,485.71

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Solution

The fourth proportional to 13,845.77, 20,768.81 and 4,485.71 is: 6,728.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.77 : 20,768.81 = 4,485.71 : x
  2. Step 2: Convert to fraction form
    13,845.77/20,768.81 = 4,485.71/x
  3. Step 3: Cross multiply
    13,845.77x = 20,768.81 × 4,485.71
  4. Step 4: Simplify right side
    13,845.77x = 93,162,888.20
  5. Step 5: Solve for x
    x = 93,162,888.20/13,845.77
  6. Step 6: Final answer
    x = 6,728.62

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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.