Home / 20,350.95-28,084.40-11,858.90

Finding the Fourth Proportional to 20,350.95, 28,084.40 and 11,858.90

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Solution

The fourth proportional to 20,350.95, 28,084.40 and 11,858.90 is: 16,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.95 : 28,084.40 = 11,858.90 : x
  2. Step 2: Convert to fraction form
    20,350.95/28,084.40 = 11,858.90/x
  3. Step 3: Cross multiply
    20,350.95x = 28,084.40 × 11,858.90
  4. Step 4: Simplify right side
    20,350.95x = 333,050,091.16
  5. Step 5: Solve for x
    x = 333,050,091.16/20,350.95
  6. Step 6: Final answer
    x = 16,365.33

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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.