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Finding the Fourth Proportional to 18,699, 28,048.65 and 5,551.37

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Solution

The fourth proportional to 18,699, 28,048.65 and 5,551.37 is: 8,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699 : 28,048.65 = 5,551.37 : x
  2. Step 2: Convert to fraction form
    18,699/28,048.65 = 5,551.37/x
  3. Step 3: Cross multiply
    18,699x = 28,048.65 × 5,551.37
  4. Step 4: Simplify right side
    18,699x = 155,708,434.15
  5. Step 5: Solve for x
    x = 155,708,434.15/18,699
  6. Step 6: Final answer
    x = 8,327.10

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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.