Home / 20,018.28-30,028.95-6,870.54

Finding the Fourth Proportional to 20,018.28, 30,028.95 and 6,870.54

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Solution

The fourth proportional to 20,018.28, 30,028.95 and 6,870.54 is: 10,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.28 : 30,028.95 = 6,870.54 : x
  2. Step 2: Convert to fraction form
    20,018.28/30,028.95 = 6,870.54/x
  3. Step 3: Cross multiply
    20,018.28x = 30,028.95 × 6,870.54
  4. Step 4: Simplify right side
    20,018.28x = 206,315,102.13
  5. Step 5: Solve for x
    x = 206,315,102.13/20,018.28
  6. Step 6: Final answer
    x = 10,306.34

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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.