Home / 19,855.58-27,409.32-13,129.34

Finding the Fourth Proportional to 19,855.58, 27,409.32 and 13,129.34

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Solution

The fourth proportional to 19,855.58, 27,409.32 and 13,129.34 is: 18,124.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.58 : 27,409.32 = 13,129.34 : x
  2. Step 2: Convert to fraction form
    19,855.58/27,409.32 = 13,129.34/x
  3. Step 3: Cross multiply
    19,855.58x = 27,409.32 × 13,129.34
  4. Step 4: Simplify right side
    19,855.58x = 359,866,144.40
  5. Step 5: Solve for x
    x = 359,866,144.40/19,855.58
  6. Step 6: Final answer
    x = 18,124.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.