Home / 28,208.27-42,319.41-19,904.51

Finding the Fourth Proportional to 28,208.27, 42,319.41 and 19,904.51

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Solution

The fourth proportional to 28,208.27, 42,319.41 and 19,904.51 is: 29,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.27 : 42,319.41 = 19,904.51 : x
  2. Step 2: Convert to fraction form
    28,208.27/42,319.41 = 19,904.51/x
  3. Step 3: Cross multiply
    28,208.27x = 42,319.41 × 19,904.51
  4. Step 4: Simplify right side
    28,208.27x = 842,346,907.94
  5. Step 5: Solve for x
    x = 842,346,907.94/28,208.27
  6. Step 6: Final answer
    x = 29,861.71

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1.5x scale

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.