Home / 20,617.02-30,930.32-8,771.45

Finding the Fourth Proportional to 20,617.02, 30,930.32 and 8,771.45

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Solution

The fourth proportional to 20,617.02, 30,930.32 and 8,771.45 is: 13,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.02 : 30,930.32 = 8,771.45 : x
  2. Step 2: Convert to fraction form
    20,617.02/30,930.32 = 8,771.45/x
  3. Step 3: Cross multiply
    20,617.02x = 30,930.32 × 8,771.45
  4. Step 4: Simplify right side
    20,617.02x = 271,303,622.64
  5. Step 5: Solve for x
    x = 271,303,622.64/20,617.02
  6. Step 6: Final answer
    x = 13,159.21

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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.