Home / 30,490.04-45,735.07-20,099.36

Finding the Fourth Proportional to 30,490.04, 45,735.07 and 20,099.36

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Solution

The fourth proportional to 30,490.04, 45,735.07 and 20,099.36 is: 30,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.04 : 45,735.07 = 20,099.36 : x
  2. Step 2: Convert to fraction form
    30,490.04/45,735.07 = 20,099.36/x
  3. Step 3: Cross multiply
    30,490.04x = 45,735.07 × 20,099.36
  4. Step 4: Simplify right side
    30,490.04x = 919,245,738.33
  5. Step 5: Solve for x
    x = 919,245,738.33/30,490.04
  6. Step 6: Final answer
    x = 30,149.05

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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.