Home / 28,915.74-43,342.44-18,916.68

Finding the Fourth Proportional to 28,915.74, 43,342.44 and 18,916.68

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Solution

The fourth proportional to 28,915.74, 43,342.44 and 18,916.68 is: 28,354.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.74 : 43,342.44 = 18,916.68 : x
  2. Step 2: Convert to fraction form
    28,915.74/43,342.44 = 18,916.68/x
  3. Step 3: Cross multiply
    28,915.74x = 43,342.44 × 18,916.68
  4. Step 4: Simplify right side
    28,915.74x = 819,895,067.90
  5. Step 5: Solve for x
    x = 819,895,067.90/28,915.74
  6. Step 6: Final answer
    x = 28,354.63

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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.