Home / 20,210.90-30,316.35-18,096.80

Finding the Fourth Proportional to 20,210.90, 30,316.35 and 18,096.80

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Solution

The fourth proportional to 20,210.90, 30,316.35 and 18,096.80 is: 27,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.90 : 30,316.35 = 18,096.80 : x
  2. Step 2: Convert to fraction form
    20,210.90/30,316.35 = 18,096.80/x
  3. Step 3: Cross multiply
    20,210.90x = 30,316.35 × 18,096.80
  4. Step 4: Simplify right side
    20,210.90x = 548,628,922.68
  5. Step 5: Solve for x
    x = 548,628,922.68/20,210.90
  6. Step 6: Final answer
    x = 27,145.20

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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.