Home / 30,083.94-45,135.63-12,558.78

Finding the Fourth Proportional to 30,083.94, 45,135.63 and 12,558.78

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Solution

The fourth proportional to 30,083.94, 45,135.63 and 12,558.78 is: 18,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,083.94 : 45,135.63 = 12,558.78 : x
  2. Step 2: Convert to fraction form
    30,083.94/45,135.63 = 12,558.78/x
  3. Step 3: Cross multiply
    30,083.94x = 45,135.63 × 12,558.78
  4. Step 4: Simplify right side
    30,083.94x = 566,848,447.33
  5. Step 5: Solve for x
    x = 566,848,447.33/30,083.94
  6. Step 6: Final answer
    x = 18,842.23

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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.