Home / 28,246.66-38,980.19-15,671.41

Finding the Fourth Proportional to 28,246.66, 38,980.19 and 15,671.41

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Solution

The fourth proportional to 28,246.66, 38,980.19 and 15,671.41 is: 21,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.66 : 38,980.19 = 15,671.41 : x
  2. Step 2: Convert to fraction form
    28,246.66/38,980.19 = 15,671.41/x
  3. Step 3: Cross multiply
    28,246.66x = 38,980.19 × 15,671.41
  4. Step 4: Simplify right side
    28,246.66x = 610,874,481.10
  5. Step 5: Solve for x
    x = 610,874,481.10/28,246.66
  6. Step 6: Final answer
    x = 21,626.43

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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.