Home / 28,571.36-39,428.48-15,996

Finding the Fourth Proportional to 28,571.36, 39,428.48 and 15,996

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Solution

The fourth proportional to 28,571.36, 39,428.48 and 15,996 is: 22,074.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.36 : 39,428.48 = 15,996 : x
  2. Step 2: Convert to fraction form
    28,571.36/39,428.48 = 15,996/x
  3. Step 3: Cross multiply
    28,571.36x = 39,428.48 × 15,996
  4. Step 4: Simplify right side
    28,571.36x = 630,697,966.08
  5. Step 5: Solve for x
    x = 630,697,966.08/28,571.36
  6. Step 6: Final answer
    x = 22,074.48

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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.