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Finding the Fourth Proportional to 38,699, 58,045.44 and 12,396.68

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Solution

The fourth proportional to 38,699, 58,045.44 and 12,396.68 is: 18,594.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,699 : 58,045.44 = 12,396.68 : x
  2. Step 2: Convert to fraction form
    38,699/58,045.44 = 12,396.68/x
  3. Step 3: Cross multiply
    38,699x = 58,045.44 × 12,396.68
  4. Step 4: Simplify right side
    38,699x = 719,570,745.14
  5. Step 5: Solve for x
    x = 719,570,745.14/38,699
  6. Step 6: Final answer
    x = 18,594.04

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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.