Home / 28,219.94-42,335.91-10,689.38

Finding the Fourth Proportional to 28,219.94, 42,335.91 and 10,689.38

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Solution

The fourth proportional to 28,219.94, 42,335.91 and 10,689.38 is: 16,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.94 : 42,335.91 = 10,689.38 : x
  2. Step 2: Convert to fraction form
    28,219.94/42,335.91 = 10,689.38/x
  3. Step 3: Cross multiply
    28,219.94x = 42,335.91 × 10,689.38
  4. Step 4: Simplify right side
    28,219.94x = 452,544,629.64
  5. Step 5: Solve for x
    x = 452,544,629.64/28,219.94
  6. Step 6: Final answer
    x = 16,036.34

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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.