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Finding the Fourth Proportional to 20,599.74, 30,900.68 and 5,809.85

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Solution

The fourth proportional to 20,599.74, 30,900.68 and 5,809.85 is: 8,715.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.74 : 30,900.68 = 5,809.85 : x
  2. Step 2: Convert to fraction form
    20,599.74/30,900.68 = 5,809.85/x
  3. Step 3: Cross multiply
    20,599.74x = 30,900.68 × 5,809.85
  4. Step 4: Simplify right side
    20,599.74x = 179,528,315.70
  5. Step 5: Solve for x
    x = 179,528,315.70/20,599.74
  6. Step 6: Final answer
    x = 8,715.08

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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.