Home / 20,283.10-30,393.29-15,830.21

Finding the Fourth Proportional to 20,283.10, 30,393.29 and 15,830.21

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Solution

The fourth proportional to 20,283.10, 30,393.29 and 15,830.21 is: 23,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.10 : 30,393.29 = 15,830.21 : x
  2. Step 2: Convert to fraction form
    20,283.10/30,393.29 = 15,830.21/x
  3. Step 3: Cross multiply
    20,283.10x = 30,393.29 × 15,830.21
  4. Step 4: Simplify right side
    20,283.10x = 481,132,163.29
  5. Step 5: Solve for x
    x = 481,132,163.29/20,283.10
  6. Step 6: Final answer
    x = 23,720.84

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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.