Home / 38,408.67-53,007.89-21,415.68

Finding the Fourth Proportional to 38,408.67, 53,007.89 and 21,415.68

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Solution

The fourth proportional to 38,408.67, 53,007.89 and 21,415.68 is: 29,555.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,408.67 : 53,007.89 = 21,415.68 : x
  2. Step 2: Convert to fraction form
    38,408.67/53,007.89 = 21,415.68/x
  3. Step 3: Cross multiply
    38,408.67x = 53,007.89 × 21,415.68
  4. Step 4: Simplify right side
    38,408.67x = 1,135,199,902.64
  5. Step 5: Solve for x
    x = 1,135,199,902.64/38,408.67
  6. Step 6: Final answer
    x = 29,555.82

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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.