Home / 20,630.34-30,902.43-13,197.06

Finding the Fourth Proportional to 20,630.34, 30,902.43 and 13,197.06

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Solution

The fourth proportional to 20,630.34, 30,902.43 and 13,197.06 is: 19,768.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.34 : 30,902.43 = 13,197.06 : x
  2. Step 2: Convert to fraction form
    20,630.34/30,902.43 = 13,197.06/x
  3. Step 3: Cross multiply
    20,630.34x = 30,902.43 × 13,197.06
  4. Step 4: Simplify right side
    20,630.34x = 407,821,222.86
  5. Step 5: Solve for x
    x = 407,821,222.86/20,630.34
  6. Step 6: Final answer
    x = 19,768.03

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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.