Home / 30,433.32-45,644.51-13,790.25

Finding the Fourth Proportional to 30,433.32, 45,644.51 and 13,790.25

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Solution

The fourth proportional to 30,433.32, 45,644.51 and 13,790.25 is: 20,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,433.32 : 45,644.51 = 13,790.25 : x
  2. Step 2: Convert to fraction form
    30,433.32/45,644.51 = 13,790.25/x
  3. Step 3: Cross multiply
    30,433.32x = 45,644.51 × 13,790.25
  4. Step 4: Simplify right side
    30,433.32x = 629,449,238.50
  5. Step 5: Solve for x
    x = 629,449,238.50/30,433.32
  6. Step 6: Final answer
    x = 20,682.90

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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.