Home / 18,763.29-28,145.18-4,912.25

Finding the Fourth Proportional to 18,763.29, 28,145.18 and 4,912.25

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Solution

The fourth proportional to 18,763.29, 28,145.18 and 4,912.25 is: 7,368.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.29 : 28,145.18 = 4,912.25 : x
  2. Step 2: Convert to fraction form
    18,763.29/28,145.18 = 4,912.25/x
  3. Step 3: Cross multiply
    18,763.29x = 28,145.18 × 4,912.25
  4. Step 4: Simplify right side
    18,763.29x = 138,256,135.89
  5. Step 5: Solve for x
    x = 138,256,135.89/18,763.29
  6. Step 6: Final answer
    x = 7,368.44

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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.