Home / 11,430.21-17,129.22-5,419.89

Finding the Fourth Proportional to 11,430.21, 17,129.22 and 5,419.89

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Solution

The fourth proportional to 11,430.21, 17,129.22 and 5,419.89 is: 8,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.21 : 17,129.22 = 5,419.89 : x
  2. Step 2: Convert to fraction form
    11,430.21/17,129.22 = 5,419.89/x
  3. Step 3: Cross multiply
    11,430.21x = 17,129.22 × 5,419.89
  4. Step 4: Simplify right side
    11,430.21x = 92,838,488.19
  5. Step 5: Solve for x
    x = 92,838,488.19/11,430.21
  6. Step 6: Final answer
    x = 8,122.20

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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.