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Finding the Fourth Proportional to 18,666.83, 27,999.90 and 4,626.89

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Solution

The fourth proportional to 18,666.83, 27,999.90 and 4,626.89 is: 6,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.83 : 27,999.90 = 4,626.89 : x
  2. Step 2: Convert to fraction form
    18,666.83/27,999.90 = 4,626.89/x
  3. Step 3: Cross multiply
    18,666.83x = 27,999.90 × 4,626.89
  4. Step 4: Simplify right side
    18,666.83x = 129,552,317.31
  5. Step 5: Solve for x
    x = 129,552,317.31/18,666.83
  6. Step 6: Final answer
    x = 6,940.24

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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.