Home / 28,537.75-39,381.33-15,790.60

Finding the Fourth Proportional to 28,537.75, 39,381.33 and 15,790.60

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Solution

The fourth proportional to 28,537.75, 39,381.33 and 15,790.60 is: 21,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.75 : 39,381.33 = 15,790.60 : x
  2. Step 2: Convert to fraction form
    28,537.75/39,381.33 = 15,790.60/x
  3. Step 3: Cross multiply
    28,537.75x = 39,381.33 × 15,790.60
  4. Step 4: Simplify right side
    28,537.75x = 621,854,829.50
  5. Step 5: Solve for x
    x = 621,854,829.50/28,537.75
  6. Step 6: Final answer
    x = 21,790.60

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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.