Home / 12,739.36-19,122-9,045.76

Finding the Fourth Proportional to 12,739.36, 19,122 and 9,045.76

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Solution

The fourth proportional to 12,739.36, 19,122 and 9,045.76 is: 13,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.36 : 19,122 = 9,045.76 : x
  2. Step 2: Convert to fraction form
    12,739.36/19,122 = 9,045.76/x
  3. Step 3: Cross multiply
    12,739.36x = 19,122 × 9,045.76
  4. Step 4: Simplify right side
    12,739.36x = 172,973,022.72
  5. Step 5: Solve for x
    x = 172,973,022.72/12,739.36
  6. Step 6: Final answer
    x = 13,577.84

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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.