Home / 28,453.37-39,258.03-18,378.14

Finding the Fourth Proportional to 28,453.37, 39,258.03 and 18,378.14

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Solution

The fourth proportional to 28,453.37, 39,258.03 and 18,378.14 is: 25,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.37 : 39,258.03 = 18,378.14 : x
  2. Step 2: Convert to fraction form
    28,453.37/39,258.03 = 18,378.14/x
  3. Step 3: Cross multiply
    28,453.37x = 39,258.03 × 18,378.14
  4. Step 4: Simplify right side
    28,453.37x = 721,489,283.28
  5. Step 5: Solve for x
    x = 721,489,283.28/28,453.37
  6. Step 6: Final answer
    x = 25,356.90

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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.