Home / 20,015.40-30,028.32-7,535.53

Finding the Fourth Proportional to 20,015.40, 30,028.32 and 7,535.53

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Solution

The fourth proportional to 20,015.40, 30,028.32 and 7,535.53 is: 11,305.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.40 : 30,028.32 = 7,535.53 : x
  2. Step 2: Convert to fraction form
    20,015.40/30,028.32 = 7,535.53/x
  3. Step 3: Cross multiply
    20,015.40x = 30,028.32 × 7,535.53
  4. Step 4: Simplify right side
    20,015.40x = 226,279,343.75
  5. Step 5: Solve for x
    x = 226,279,343.75/20,015.40
  6. Step 6: Final answer
    x = 11,305.26

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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.