Home / 30,119.58-41,551.80-21,172.86

Finding the Fourth Proportional to 30,119.58, 41,551.80 and 21,172.86

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Solution

The fourth proportional to 30,119.58, 41,551.80 and 21,172.86 is: 29,209.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.58 : 41,551.80 = 21,172.86 : x
  2. Step 2: Convert to fraction form
    30,119.58/41,551.80 = 21,172.86/x
  3. Step 3: Cross multiply
    30,119.58x = 41,551.80 × 21,172.86
  4. Step 4: Simplify right side
    30,119.58x = 879,770,444.15
  5. Step 5: Solve for x
    x = 879,770,444.15/30,119.58
  6. Step 6: Final answer
    x = 29,209.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.