Home / 19,103.31-28,645.65-11,208.38

Finding the Fourth Proportional to 19,103.31, 28,645.65 and 11,208.38

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Solution

The fourth proportional to 19,103.31, 28,645.65 and 11,208.38 is: 16,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,103.31 : 28,645.65 = 11,208.38 : x
  2. Step 2: Convert to fraction form
    19,103.31/28,645.65 = 11,208.38/x
  3. Step 3: Cross multiply
    19,103.31x = 28,645.65 × 11,208.38
  4. Step 4: Simplify right side
    19,103.31x = 321,071,187.32
  5. Step 5: Solve for x
    x = 321,071,187.32/19,103.31
  6. Step 6: Final answer
    x = 16,807.10

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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.