Home / 28,720.36-43,091.66-13,928.20

Finding the Fourth Proportional to 28,720.36, 43,091.66 and 13,928.20

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Solution

The fourth proportional to 28,720.36, 43,091.66 and 13,928.20 is: 20,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.36 : 43,091.66 = 13,928.20 : x
  2. Step 2: Convert to fraction form
    28,720.36/43,091.66 = 13,928.20/x
  3. Step 3: Cross multiply
    28,720.36x = 43,091.66 × 13,928.20
  4. Step 4: Simplify right side
    28,720.36x = 600,189,258.81
  5. Step 5: Solve for x
    x = 600,189,258.81/28,720.36
  6. Step 6: Final answer
    x = 20,897.69

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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.