Home / 18,969.55-28,450.39-5,642.62

Finding the Fourth Proportional to 18,969.55, 28,450.39 and 5,642.62

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Solution

The fourth proportional to 18,969.55, 28,450.39 and 5,642.62 is: 8,462.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.55 : 28,450.39 = 5,642.62 : x
  2. Step 2: Convert to fraction form
    18,969.55/28,450.39 = 5,642.62/x
  3. Step 3: Cross multiply
    18,969.55x = 28,450.39 × 5,642.62
  4. Step 4: Simplify right side
    18,969.55x = 160,534,597.37
  5. Step 5: Solve for x
    x = 160,534,597.37/18,969.55
  6. Step 6: Final answer
    x = 8,462.75

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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.