Home / 28,440.32-39,260.19-18,373.64

Finding the Fourth Proportional to 28,440.32, 39,260.19 and 18,373.64

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Solution

The fourth proportional to 28,440.32, 39,260.19 and 18,373.64 is: 25,363.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.32 : 39,260.19 = 18,373.64 : x
  2. Step 2: Convert to fraction form
    28,440.32/39,260.19 = 18,373.64/x
  3. Step 3: Cross multiply
    28,440.32x = 39,260.19 × 18,373.64
  4. Step 4: Simplify right side
    28,440.32x = 721,352,469.99
  5. Step 5: Solve for x
    x = 721,352,469.99/28,440.32
  6. Step 6: Final answer
    x = 25,363.73

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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.