Home / 18,729.48-28,090.37-5,578.32

Finding the Fourth Proportional to 18,729.48, 28,090.37 and 5,578.32

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Solution

The fourth proportional to 18,729.48, 28,090.37 and 5,578.32 is: 8,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.48 : 28,090.37 = 5,578.32 : x
  2. Step 2: Convert to fraction form
    18,729.48/28,090.37 = 5,578.32/x
  3. Step 3: Cross multiply
    18,729.48x = 28,090.37 × 5,578.32
  4. Step 4: Simplify right side
    18,729.48x = 156,696,904.43
  5. Step 5: Solve for x
    x = 156,696,904.43/18,729.48
  6. Step 6: Final answer
    x = 8,366.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.