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Finding the Fourth Proportional to 18,804.36, 28,207.62 and 4,953

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Solution

The fourth proportional to 18,804.36, 28,207.62 and 4,953 is: 7,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.36 : 28,207.62 = 4,953 : x
  2. Step 2: Convert to fraction form
    18,804.36/28,207.62 = 4,953/x
  3. Step 3: Cross multiply
    18,804.36x = 28,207.62 × 4,953
  4. Step 4: Simplify right side
    18,804.36x = 139,712,341.86
  5. Step 5: Solve for x
    x = 139,712,341.86/18,804.36
  6. Step 6: Final answer
    x = 7,429.78

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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.