Home / 38,418.39-53,017.16-21,422.85

Finding the Fourth Proportional to 38,418.39, 53,017.16 and 21,422.85

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Solution

The fourth proportional to 38,418.39, 53,017.16 and 21,422.85 is: 29,563.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,418.39 : 53,017.16 = 21,422.85 : x
  2. Step 2: Convert to fraction form
    38,418.39/53,017.16 = 21,422.85/x
  3. Step 3: Cross multiply
    38,418.39x = 53,017.16 × 21,422.85
  4. Step 4: Simplify right side
    38,418.39x = 1,135,778,558.99
  5. Step 5: Solve for x
    x = 1,135,778,558.99/38,418.39
  6. Step 6: Final answer
    x = 29,563.41

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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.