Home / 18,709.35-28,064.43-4,669.20

Finding the Fourth Proportional to 18,709.35, 28,064.43 and 4,669.20

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Solution

The fourth proportional to 18,709.35, 28,064.43 and 4,669.20 is: 7,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.35 : 28,064.43 = 4,669.20 : x
  2. Step 2: Convert to fraction form
    18,709.35/28,064.43 = 4,669.20/x
  3. Step 3: Cross multiply
    18,709.35x = 28,064.43 × 4,669.20
  4. Step 4: Simplify right side
    18,709.35x = 131,038,436.56
  5. Step 5: Solve for x
    x = 131,038,436.56/18,709.35
  6. Step 6: Final answer
    x = 7,003.90

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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.