Home / 28,816.95-39,770.60-16,890.37

Finding the Fourth Proportional to 28,816.95, 39,770.60 and 16,890.37

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Solution

The fourth proportional to 28,816.95, 39,770.60 and 16,890.37 is: 23,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,816.95 : 39,770.60 = 16,890.37 : x
  2. Step 2: Convert to fraction form
    28,816.95/39,770.60 = 16,890.37/x
  3. Step 3: Cross multiply
    28,816.95x = 39,770.60 × 16,890.37
  4. Step 4: Simplify right side
    28,816.95x = 671,740,191.35
  5. Step 5: Solve for x
    x = 671,740,191.35/28,816.95
  6. Step 6: Final answer
    x = 23,310.60

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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.