Home / 28,763.78-43,137.14-12,959.69

Finding the Fourth Proportional to 28,763.78, 43,137.14 and 12,959.69

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Solution

The fourth proportional to 28,763.78, 43,137.14 and 12,959.69 is: 19,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763.78 : 43,137.14 = 12,959.69 : x
  2. Step 2: Convert to fraction form
    28,763.78/43,137.14 = 12,959.69/x
  3. Step 3: Cross multiply
    28,763.78x = 43,137.14 × 12,959.69
  4. Step 4: Simplify right side
    28,763.78x = 559,043,681.40
  5. Step 5: Solve for x
    x = 559,043,681.40/28,763.78
  6. Step 6: Final answer
    x = 19,435.69

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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.