Home / 20,976.66-28,947.64-11,416.26

Finding the Fourth Proportional to 20,976.66, 28,947.64 and 11,416.26

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Solution

The fourth proportional to 20,976.66, 28,947.64 and 11,416.26 is: 15,754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.66 : 28,947.64 = 11,416.26 : x
  2. Step 2: Convert to fraction form
    20,976.66/28,947.64 = 11,416.26/x
  3. Step 3: Cross multiply
    20,976.66x = 28,947.64 × 11,416.26
  4. Step 4: Simplify right side
    20,976.66x = 330,473,784.63
  5. Step 5: Solve for x
    x = 330,473,784.63/20,976.66
  6. Step 6: Final answer
    x = 15,754.36

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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.