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Finding the Fourth Proportional to 20,435.83, 30,653.71 and 5,644.71

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Solution

The fourth proportional to 20,435.83, 30,653.71 and 5,644.71 is: 8,467.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.83 : 30,653.71 = 5,644.71 : x
  2. Step 2: Convert to fraction form
    20,435.83/30,653.71 = 5,644.71/x
  3. Step 3: Cross multiply
    20,435.83x = 30,653.71 × 5,644.71
  4. Step 4: Simplify right side
    20,435.83x = 173,031,303.37
  5. Step 5: Solve for x
    x = 173,031,303.37/20,435.83
  6. Step 6: Final answer
    x = 8,467.06

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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.