Home / 28,338.94-39,107.96-15,763.69

Finding the Fourth Proportional to 28,338.94, 39,107.96 and 15,763.69

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Solution

The fourth proportional to 28,338.94, 39,107.96 and 15,763.69 is: 21,754.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.94 : 39,107.96 = 15,763.69 : x
  2. Step 2: Convert to fraction form
    28,338.94/39,107.96 = 15,763.69/x
  3. Step 3: Cross multiply
    28,338.94x = 39,107.96 × 15,763.69
  4. Step 4: Simplify right side
    28,338.94x = 616,485,699.61
  5. Step 5: Solve for x
    x = 616,485,699.61/28,338.94
  6. Step 6: Final answer
    x = 21,754.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.