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Finding the Fourth Proportional to 20,220.90, 30,332.70 and 6,893.70

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Solution

The fourth proportional to 20,220.90, 30,332.70 and 6,893.70 is: 10,341.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.90 : 30,332.70 = 6,893.70 : x
  2. Step 2: Convert to fraction form
    20,220.90/30,332.70 = 6,893.70/x
  3. Step 3: Cross multiply
    20,220.90x = 30,332.70 × 6,893.70
  4. Step 4: Simplify right side
    20,220.90x = 209,104,533.99
  5. Step 5: Solve for x
    x = 209,104,533.99/20,220.90
  6. Step 6: Final answer
    x = 10,341.01

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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.