Home / 28,285.88-42,429.83-7,509.38

Finding the Fourth Proportional to 28,285.88, 42,429.83 and 7,509.38

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Solution

The fourth proportional to 28,285.88, 42,429.83 and 7,509.38 is: 11,264.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.88 : 42,429.83 = 7,509.38 : x
  2. Step 2: Convert to fraction form
    28,285.88/42,429.83 = 7,509.38/x
  3. Step 3: Cross multiply
    28,285.88x = 42,429.83 × 7,509.38
  4. Step 4: Simplify right side
    28,285.88x = 318,621,467.11
  5. Step 5: Solve for x
    x = 318,621,467.11/28,285.88
  6. Step 6: Final answer
    x = 11,264.33

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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.