Home / 28,665.53-39,557.10-15,919.54

Finding the Fourth Proportional to 28,665.53, 39,557.10 and 15,919.54

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Solution

The fourth proportional to 28,665.53, 39,557.10 and 15,919.54 is: 21,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665.53 : 39,557.10 = 15,919.54 : x
  2. Step 2: Convert to fraction form
    28,665.53/39,557.10 = 15,919.54/x
  3. Step 3: Cross multiply
    28,665.53x = 39,557.10 × 15,919.54
  4. Step 4: Simplify right side
    28,665.53x = 629,730,684.61
  5. Step 5: Solve for x
    x = 629,730,684.61/28,665.53
  6. Step 6: Final answer
    x = 21,968.22

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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.