Home / 39,784.18-54,902.33-21,880.32

Finding the Fourth Proportional to 39,784.18, 54,902.33 and 21,880.32

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Solution

The fourth proportional to 39,784.18, 54,902.33 and 21,880.32 is: 30,194.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.18 : 54,902.33 = 21,880.32 : x
  2. Step 2: Convert to fraction form
    39,784.18/54,902.33 = 21,880.32/x
  3. Step 3: Cross multiply
    39,784.18x = 54,902.33 × 21,880.32
  4. Step 4: Simplify right side
    39,784.18x = 1,201,280,603.85
  5. Step 5: Solve for x
    x = 1,201,280,603.85/39,784.18
  6. Step 6: Final answer
    x = 30,194.93

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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.