Home / 19,140.88-28,711.32-11,326

Finding the Fourth Proportional to 19,140.88, 28,711.32 and 11,326

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Solution

The fourth proportional to 19,140.88, 28,711.32 and 11,326 is: 16,989

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.88 : 28,711.32 = 11,326 : x
  2. Step 2: Convert to fraction form
    19,140.88/28,711.32 = 11,326/x
  3. Step 3: Cross multiply
    19,140.88x = 28,711.32 × 11,326
  4. Step 4: Simplify right side
    19,140.88x = 325,184,410.32
  5. Step 5: Solve for x
    x = 325,184,410.32/19,140.88
  6. Step 6: Final answer
    x = 16,989

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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.