Home / 18,990.27-28,485.47-5,842.55

Finding the Fourth Proportional to 18,990.27, 28,485.47 and 5,842.55

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Solution

The fourth proportional to 18,990.27, 28,485.47 and 5,842.55 is: 8,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.27 : 28,485.47 = 5,842.55 : x
  2. Step 2: Convert to fraction form
    18,990.27/28,485.47 = 5,842.55/x
  3. Step 3: Cross multiply
    18,990.27x = 28,485.47 × 5,842.55
  4. Step 4: Simplify right side
    18,990.27x = 166,427,868.57
  5. Step 5: Solve for x
    x = 166,427,868.57/18,990.27
  6. Step 6: Final answer
    x = 8,763.85

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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.