Home / 30,321.03-45,487.85-12,791.01

Finding the Fourth Proportional to 30,321.03, 45,487.85 and 12,791.01

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Solution

The fourth proportional to 30,321.03, 45,487.85 and 12,791.01 is: 19,189.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,321.03 : 45,487.85 = 12,791.01 : x
  2. Step 2: Convert to fraction form
    30,321.03/45,487.85 = 12,791.01/x
  3. Step 3: Cross multiply
    30,321.03x = 45,487.85 × 12,791.01
  4. Step 4: Simplify right side
    30,321.03x = 581,835,480.27
  5. Step 5: Solve for x
    x = 581,835,480.27/30,321.03
  6. Step 6: Final answer
    x = 19,189.17

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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.