Home / 30,078.32-45,092.09-18,960.50

Finding the Fourth Proportional to 30,078.32, 45,092.09 and 18,960.50

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Solution

The fourth proportional to 30,078.32, 45,092.09 and 18,960.50 is: 28,424.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.32 : 45,092.09 = 18,960.50 : x
  2. Step 2: Convert to fraction form
    30,078.32/45,092.09 = 18,960.50/x
  3. Step 3: Cross multiply
    30,078.32x = 45,092.09 × 18,960.50
  4. Step 4: Simplify right side
    30,078.32x = 854,968,478.93
  5. Step 5: Solve for x
    x = 854,968,478.93/30,078.32
  6. Step 6: Final answer
    x = 28,424.74

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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.