Home / 28,587.98-39,452.27-15,839.96

Finding the Fourth Proportional to 28,587.98, 39,452.27 and 15,839.96

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Solution

The fourth proportional to 28,587.98, 39,452.27 and 15,839.96 is: 21,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.98 : 39,452.27 = 15,839.96 : x
  2. Step 2: Convert to fraction form
    28,587.98/39,452.27 = 15,839.96/x
  3. Step 3: Cross multiply
    28,587.98x = 39,452.27 × 15,839.96
  4. Step 4: Simplify right side
    28,587.98x = 624,922,457.54
  5. Step 5: Solve for x
    x = 624,922,457.54/28,587.98
  6. Step 6: Final answer
    x = 21,859.63

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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.