Home / 30,155.83-41,601.40-18,828.15

Finding the Fourth Proportional to 30,155.83, 41,601.40 and 18,828.15

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Solution

The fourth proportional to 30,155.83, 41,601.40 and 18,828.15 is: 25,974.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.83 : 41,601.40 = 18,828.15 : x
  2. Step 2: Convert to fraction form
    30,155.83/41,601.40 = 18,828.15/x
  3. Step 3: Cross multiply
    30,155.83x = 41,601.40 × 18,828.15
  4. Step 4: Simplify right side
    30,155.83x = 783,277,196.33
  5. Step 5: Solve for x
    x = 783,277,196.33/30,155.83
  6. Step 6: Final answer
    x = 25,974.32

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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.