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Finding the Fourth Proportional to 18,280.63, 27,421.09 and 4,429.63

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Solution

The fourth proportional to 18,280.63, 27,421.09 and 4,429.63 is: 6,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.63 : 27,421.09 = 4,429.63 : x
  2. Step 2: Convert to fraction form
    18,280.63/27,421.09 = 4,429.63/x
  3. Step 3: Cross multiply
    18,280.63x = 27,421.09 × 4,429.63
  4. Step 4: Simplify right side
    18,280.63x = 121,465,145.79
  5. Step 5: Solve for x
    x = 121,465,145.79/18,280.63
  6. Step 6: Final answer
    x = 6,644.47

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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.