Home / 20,022.12-30,018.60-9,621.72

Finding the Fourth Proportional to 20,022.12, 30,018.60 and 9,621.72

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Solution

The fourth proportional to 20,022.12, 30,018.60 and 9,621.72 is: 14,425.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,022.12 : 30,018.60 = 9,621.72 : x
  2. Step 2: Convert to fraction form
    20,022.12/30,018.60 = 9,621.72/x
  3. Step 3: Cross multiply
    20,022.12x = 30,018.60 × 9,621.72
  4. Step 4: Simplify right side
    20,022.12x = 288,830,563.99
  5. Step 5: Solve for x
    x = 288,830,563.99/20,022.12
  6. Step 6: Final answer
    x = 14,425.57

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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.