Home / 18,763.54-28,145.55-4,912.50

Finding the Fourth Proportional to 18,763.54, 28,145.55 and 4,912.50

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Solution

The fourth proportional to 18,763.54, 28,145.55 and 4,912.50 is: 7,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.54 : 28,145.55 = 4,912.50 : x
  2. Step 2: Convert to fraction form
    18,763.54/28,145.55 = 4,912.50/x
  3. Step 3: Cross multiply
    18,763.54x = 28,145.55 × 4,912.50
  4. Step 4: Simplify right side
    18,763.54x = 138,265,014.38
  5. Step 5: Solve for x
    x = 138,265,014.38/18,763.54
  6. Step 6: Final answer
    x = 7,368.81

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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.