Home / 20,120.95-30,181.80-6,973.75

Finding the Fourth Proportional to 20,120.95, 30,181.80 and 6,973.75

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Solution

The fourth proportional to 20,120.95, 30,181.80 and 6,973.75 is: 10,460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.95 : 30,181.80 = 6,973.75 : x
  2. Step 2: Convert to fraction form
    20,120.95/30,181.80 = 6,973.75/x
  3. Step 3: Cross multiply
    20,120.95x = 30,181.80 × 6,973.75
  4. Step 4: Simplify right side
    20,120.95x = 210,480,327.75
  5. Step 5: Solve for x
    x = 210,480,327.75/20,120.95
  6. Step 6: Final answer
    x = 10,460.75

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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.