Home / 28,917.66-39,890.43-19,969.86

Finding the Fourth Proportional to 28,917.66, 39,890.43 and 19,969.86

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Solution

The fourth proportional to 28,917.66, 39,890.43 and 19,969.86 is: 27,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.66 : 39,890.43 = 19,969.86 : x
  2. Step 2: Convert to fraction form
    28,917.66/39,890.43 = 19,969.86/x
  3. Step 3: Cross multiply
    28,917.66x = 39,890.43 × 19,969.86
  4. Step 4: Simplify right side
    28,917.66x = 796,606,302.44
  5. Step 5: Solve for x
    x = 796,606,302.44/28,917.66
  6. Step 6: Final answer
    x = 27,547.40

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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.