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Finding the Fourth Proportional to 30,028.80, 45,052.80 and 19,004.16

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Solution

The fourth proportional to 30,028.80, 45,052.80 and 19,004.16 is: 28,512.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.80 : 45,052.80 = 19,004.16 : x
  2. Step 2: Convert to fraction form
    30,028.80/45,052.80 = 19,004.16/x
  3. Step 3: Cross multiply
    30,028.80x = 45,052.80 × 19,004.16
  4. Step 4: Simplify right side
    30,028.80x = 856,190,619.65
  5. Step 5: Solve for x
    x = 856,190,619.65/30,028.80
  6. Step 6: Final answer
    x = 28,512.32

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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.