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Finding the Fourth Proportional to 20,522.83, 30,785.99 and 6,479.10

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Solution

The fourth proportional to 20,522.83, 30,785.99 and 6,479.10 is: 9,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.83 : 30,785.99 = 6,479.10 : x
  2. Step 2: Convert to fraction form
    20,522.83/30,785.99 = 6,479.10/x
  3. Step 3: Cross multiply
    20,522.83x = 30,785.99 × 6,479.10
  4. Step 4: Simplify right side
    20,522.83x = 199,465,507.81
  5. Step 5: Solve for x
    x = 199,465,507.81/20,522.83
  6. Step 6: Final answer
    x = 9,719.20

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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.