Home / 19,289.81-28,910.82-11,384.31

Finding the Fourth Proportional to 19,289.81, 28,910.82 and 11,384.31

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Solution

The fourth proportional to 19,289.81, 28,910.82 and 11,384.31 is: 17,062.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.81 : 28,910.82 = 11,384.31 : x
  2. Step 2: Convert to fraction form
    19,289.81/28,910.82 = 11,384.31/x
  3. Step 3: Cross multiply
    19,289.81x = 28,910.82 × 11,384.31
  4. Step 4: Simplify right side
    19,289.81x = 329,129,888.34
  5. Step 5: Solve for x
    x = 329,129,888.34/19,289.81
  6. Step 6: Final answer
    x = 17,062.37

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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.