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Finding the Fourth Proportional to 20,599.34, 30,898.69 and 7,448.49

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Solution

The fourth proportional to 20,599.34, 30,898.69 and 7,448.49 is: 11,172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.34 : 30,898.69 = 7,448.49 : x
  2. Step 2: Convert to fraction form
    20,599.34/30,898.69 = 7,448.49/x
  3. Step 3: Cross multiply
    20,599.34x = 30,898.69 × 7,448.49
  4. Step 4: Simplify right side
    20,599.34x = 230,148,564.86
  5. Step 5: Solve for x
    x = 230,148,564.86/20,599.34
  6. Step 6: Final answer
    x = 11,172.62

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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.