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Finding the Fourth Proportional to 20,130.19, 30,200.03 and 19,795.48

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Solution

The fourth proportional to 20,130.19, 30,200.03 and 19,795.48 is: 29,697.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.19 : 30,200.03 = 19,795.48 : x
  2. Step 2: Convert to fraction form
    20,130.19/30,200.03 = 19,795.48/x
  3. Step 3: Cross multiply
    20,130.19x = 30,200.03 × 19,795.48
  4. Step 4: Simplify right side
    20,130.19x = 597,824,089.86
  5. Step 5: Solve for x
    x = 597,824,089.86/20,130.19
  6. Step 6: Final answer
    x = 29,697.89

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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.