Home / 28,665.77-39,557.43-15,919.77

Finding the Fourth Proportional to 28,665.77, 39,557.43 and 15,919.77

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Solution

The fourth proportional to 28,665.77, 39,557.43 and 15,919.77 is: 21,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665.77 : 39,557.43 = 15,919.77 : x
  2. Step 2: Convert to fraction form
    28,665.77/39,557.43 = 15,919.77/x
  3. Step 3: Cross multiply
    28,665.77x = 39,557.43 × 15,919.77
  4. Step 4: Simplify right side
    28,665.77x = 629,745,187.39
  5. Step 5: Solve for x
    x = 629,745,187.39/28,665.77
  6. Step 6: Final answer
    x = 21,968.55

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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.