Home / 28,370.88-42,529.84-9,638.10

Finding the Fourth Proportional to 28,370.88, 42,529.84 and 9,638.10

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Solution

The fourth proportional to 28,370.88, 42,529.84 and 9,638.10 is: 14,448.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.88 : 42,529.84 = 9,638.10 : x
  2. Step 2: Convert to fraction form
    28,370.88/42,529.84 = 9,638.10/x
  3. Step 3: Cross multiply
    28,370.88x = 42,529.84 × 9,638.10
  4. Step 4: Simplify right side
    28,370.88x = 409,906,850.90
  5. Step 5: Solve for x
    x = 409,906,850.90/28,370.88
  6. Step 6: Final answer
    x = 14,448.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.