Home / 20,242.02-30,300.21-18,519.60

Finding the Fourth Proportional to 20,242.02, 30,300.21 and 18,519.60

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Solution

The fourth proportional to 20,242.02, 30,300.21 and 18,519.60 is: 27,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.02 : 30,300.21 = 18,519.60 : x
  2. Step 2: Convert to fraction form
    20,242.02/30,300.21 = 18,519.60/x
  3. Step 3: Cross multiply
    20,242.02x = 30,300.21 × 18,519.60
  4. Step 4: Simplify right side
    20,242.02x = 561,147,769.12
  5. Step 5: Solve for x
    x = 561,147,769.12/20,242.02
  6. Step 6: Final answer
    x = 27,721.93

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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.