Home / 28,105.25-38,768.28-18,541.73

Finding the Fourth Proportional to 28,105.25, 38,768.28 and 18,541.73

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Solution

The fourth proportional to 28,105.25, 38,768.28 and 18,541.73 is: 25,576.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105.25 : 38,768.28 = 18,541.73 : x
  2. Step 2: Convert to fraction form
    28,105.25/38,768.28 = 18,541.73/x
  3. Step 3: Cross multiply
    28,105.25x = 38,768.28 × 18,541.73
  4. Step 4: Simplify right side
    28,105.25x = 718,830,980.32
  5. Step 5: Solve for x
    x = 718,830,980.32/28,105.25
  6. Step 6: Final answer
    x = 25,576.40

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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.