Home / 11,128.12-16,679.19-9,051.84

Finding the Fourth Proportional to 11,128.12, 16,679.19 and 9,051.84

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Solution

The fourth proportional to 11,128.12, 16,679.19 and 9,051.84 is: 13,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.12 : 16,679.19 = 9,051.84 : x
  2. Step 2: Convert to fraction form
    11,128.12/16,679.19 = 9,051.84/x
  3. Step 3: Cross multiply
    11,128.12x = 16,679.19 × 9,051.84
  4. Step 4: Simplify right side
    11,128.12x = 150,977,317.51
  5. Step 5: Solve for x
    x = 150,977,317.51/11,128.12
  6. Step 6: Final answer
    x = 13,567.20

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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.