Home / 13,768.85-20,639.07-5,445.50

Finding the Fourth Proportional to 13,768.85, 20,639.07 and 5,445.50

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Solution

The fourth proportional to 13,768.85, 20,639.07 and 5,445.50 is: 8,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.85 : 20,639.07 = 5,445.50 : x
  2. Step 2: Convert to fraction form
    13,768.85/20,639.07 = 5,445.50/x
  3. Step 3: Cross multiply
    13,768.85x = 20,639.07 × 5,445.50
  4. Step 4: Simplify right side
    13,768.85x = 112,389,952.49
  5. Step 5: Solve for x
    x = 112,389,952.49/13,768.85
  6. Step 6: Final answer
    x = 8,162.62

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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.