Home / 39,338.61-54,287.90-21,433.60

Finding the Fourth Proportional to 39,338.61, 54,287.90 and 21,433.60

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Solution

The fourth proportional to 39,338.61, 54,287.90 and 21,433.60 is: 29,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,338.61 : 54,287.90 = 21,433.60 : x
  2. Step 2: Convert to fraction form
    39,338.61/54,287.90 = 21,433.60/x
  3. Step 3: Cross multiply
    39,338.61x = 54,287.90 × 21,433.60
  4. Step 4: Simplify right side
    39,338.61x = 1,163,585,133.44
  5. Step 5: Solve for x
    x = 1,163,585,133.44/39,338.61
  6. Step 6: Final answer
    x = 29,578.70

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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.