Home / 28,661.61-39,554.96-15,916.26

Finding the Fourth Proportional to 28,661.61, 39,554.96 and 15,916.26

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Solution

The fourth proportional to 28,661.61, 39,554.96 and 15,916.26 is: 21,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.61 : 39,554.96 = 15,916.26 : x
  2. Step 2: Convert to fraction form
    28,661.61/39,554.96 = 15,916.26/x
  3. Step 3: Cross multiply
    28,661.61x = 39,554.96 × 15,916.26
  4. Step 4: Simplify right side
    28,661.61x = 629,567,027.65
  5. Step 5: Solve for x
    x = 629,567,027.65/28,661.61
  6. Step 6: Final answer
    x = 21,965.52

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1.5x scale

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.