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Finding the Fourth Proportional to 20,070.40, 30,114.60 and 6,932.20

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Solution

The fourth proportional to 20,070.40, 30,114.60 and 6,932.20 is: 10,401.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.40 : 30,114.60 = 6,932.20 : x
  2. Step 2: Convert to fraction form
    20,070.40/30,114.60 = 6,932.20/x
  3. Step 3: Cross multiply
    20,070.40x = 30,114.60 × 6,932.20
  4. Step 4: Simplify right side
    20,070.40x = 208,760,430.12
  5. Step 5: Solve for x
    x = 208,760,430.12/20,070.40
  6. Step 6: Final answer
    x = 10,401.41

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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.