Home / 20,571.47-28,388.72-11,619.08

Finding the Fourth Proportional to 20,571.47, 28,388.72 and 11,619.08

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Solution

The fourth proportional to 20,571.47, 28,388.72 and 11,619.08 is: 16,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.47 : 28,388.72 = 11,619.08 : x
  2. Step 2: Convert to fraction form
    20,571.47/28,388.72 = 11,619.08/x
  3. Step 3: Cross multiply
    20,571.47x = 28,388.72 × 11,619.08
  4. Step 4: Simplify right side
    20,571.47x = 329,850,808.78
  5. Step 5: Solve for x
    x = 329,850,808.78/20,571.47
  6. Step 6: Final answer
    x = 16,034.38

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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.