Home / 28,377.90-42,569.29-7,317.75

Finding the Fourth Proportional to 28,377.90, 42,569.29 and 7,317.75

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Solution

The fourth proportional to 28,377.90, 42,569.29 and 7,317.75 is: 10,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.90 : 42,569.29 = 7,317.75 : x
  2. Step 2: Convert to fraction form
    28,377.90/42,569.29 = 7,317.75/x
  3. Step 3: Cross multiply
    28,377.90x = 42,569.29 × 7,317.75
  4. Step 4: Simplify right side
    28,377.90x = 311,511,421.90
  5. Step 5: Solve for x
    x = 311,511,421.90/28,377.90
  6. Step 6: Final answer
    x = 10,977.26

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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.