Home / 30,078.36-45,087.78-14,255.60

Finding the Fourth Proportional to 30,078.36, 45,087.78 and 14,255.60

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Solution

The fourth proportional to 30,078.36, 45,087.78 and 14,255.60 is: 21,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.36 : 45,087.78 = 14,255.60 : x
  2. Step 2: Convert to fraction form
    30,078.36/45,087.78 = 14,255.60/x
  3. Step 3: Cross multiply
    30,078.36x = 45,087.78 × 14,255.60
  4. Step 4: Simplify right side
    30,078.36x = 642,753,356.57
  5. Step 5: Solve for x
    x = 642,753,356.57/30,078.36
  6. Step 6: Final answer
    x = 21,369.30

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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.