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Finding the Fourth Proportional to 20,287.68, 30,443.04 and 8,599.68

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Solution

The fourth proportional to 20,287.68, 30,443.04 and 8,599.68 is: 12,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.68 : 30,443.04 = 8,599.68 : x
  2. Step 2: Convert to fraction form
    20,287.68/30,443.04 = 8,599.68/x
  3. Step 3: Cross multiply
    20,287.68x = 30,443.04 × 8,599.68
  4. Step 4: Simplify right side
    20,287.68x = 261,800,402.23
  5. Step 5: Solve for x
    x = 261,800,402.23/20,287.68
  6. Step 6: Final answer
    x = 12,904.40

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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.