Home / 28,897.75-39,878.94-15,649.75

Finding the Fourth Proportional to 28,897.75, 39,878.94 and 15,649.75

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Solution

The fourth proportional to 28,897.75, 39,878.94 and 15,649.75 is: 21,596.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,897.75 : 39,878.94 = 15,649.75 : x
  2. Step 2: Convert to fraction form
    28,897.75/39,878.94 = 15,649.75/x
  3. Step 3: Cross multiply
    28,897.75x = 39,878.94 × 15,649.75
  4. Step 4: Simplify right side
    28,897.75x = 624,095,441.27
  5. Step 5: Solve for x
    x = 624,095,441.27/28,897.75
  6. Step 6: Final answer
    x = 21,596.68

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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.