Home / 28,629.14-42,938.78-7,569.41

Finding the Fourth Proportional to 28,629.14, 42,938.78 and 7,569.41

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Solution

The fourth proportional to 28,629.14, 42,938.78 and 7,569.41 is: 11,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.14 : 42,938.78 = 7,569.41 : x
  2. Step 2: Convert to fraction form
    28,629.14/42,938.78 = 7,569.41/x
  3. Step 3: Cross multiply
    28,629.14x = 42,938.78 × 7,569.41
  4. Step 4: Simplify right side
    28,629.14x = 325,020,978.18
  5. Step 5: Solve for x
    x = 325,020,978.18/28,629.14
  6. Step 6: Final answer
    x = 11,352.80

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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.