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Finding the Fourth Proportional to 18,684.74, 28,026.68 and 4,644.81

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Solution

The fourth proportional to 18,684.74, 28,026.68 and 4,644.81 is: 6,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.74 : 28,026.68 = 4,644.81 : x
  2. Step 2: Convert to fraction form
    18,684.74/28,026.68 = 4,644.81/x
  3. Step 3: Cross multiply
    18,684.74x = 28,026.68 × 4,644.81
  4. Step 4: Simplify right side
    18,684.74x = 130,178,580.31
  5. Step 5: Solve for x
    x = 130,178,580.31/18,684.74
  6. Step 6: Final answer
    x = 6,967.11

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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.