Home / 28,408.10-39,221.45-25,418.75

Finding the Fourth Proportional to 28,408.10, 39,221.45 and 25,418.75

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Solution

The fourth proportional to 28,408.10, 39,221.45 and 25,418.75 is: 35,094.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.10 : 39,221.45 = 25,418.75 : x
  2. Step 2: Convert to fraction form
    28,408.10/39,221.45 = 25,418.75/x
  3. Step 3: Cross multiply
    28,408.10x = 39,221.45 × 25,418.75
  4. Step 4: Simplify right side
    28,408.10x = 996,960,277.01
  5. Step 5: Solve for x
    x = 996,960,277.01/28,408.10
  6. Step 6: Final answer
    x = 35,094.22

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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.