Home / 15,276.87-21,067.30-11,918.46

Finding the Fourth Proportional to 15,276.87, 21,067.30 and 11,918.46

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Solution

The fourth proportional to 15,276.87, 21,067.30 and 11,918.46 is: 16,435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.87 : 21,067.30 = 11,918.46 : x
  2. Step 2: Convert to fraction form
    15,276.87/21,067.30 = 11,918.46/x
  3. Step 3: Cross multiply
    15,276.87x = 21,067.30 × 11,918.46
  4. Step 4: Simplify right side
    15,276.87x = 251,089,866.26
  5. Step 5: Solve for x
    x = 251,089,866.26/15,276.87
  6. Step 6: Final answer
    x = 16,435.95

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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.