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Finding the Fourth Proportional to 20,059.84, 30,089.56 and 6,912.12

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Solution

The fourth proportional to 20,059.84, 30,089.56 and 6,912.12 is: 10,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,059.84 : 30,089.56 = 6,912.12 : x
  2. Step 2: Convert to fraction form
    20,059.84/30,089.56 = 6,912.12/x
  3. Step 3: Cross multiply
    20,059.84x = 30,089.56 × 6,912.12
  4. Step 4: Simplify right side
    20,059.84x = 207,982,649.47
  5. Step 5: Solve for x
    x = 207,982,649.47/20,059.84
  6. Step 6: Final answer
    x = 10,368.11

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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.