Home / 20,976.24-28,947.26-11,416.13

Finding the Fourth Proportional to 20,976.24, 28,947.26 and 11,416.13

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Solution

The fourth proportional to 20,976.24, 28,947.26 and 11,416.13 is: 15,754.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.24 : 28,947.26 = 11,416.13 : x
  2. Step 2: Convert to fraction form
    20,976.24/28,947.26 = 11,416.13/x
  3. Step 3: Cross multiply
    20,976.24x = 28,947.26 × 11,416.13
  4. Step 4: Simplify right side
    20,976.24x = 330,465,683.30
  5. Step 5: Solve for x
    x = 330,465,683.30/20,976.24
  6. Step 6: Final answer
    x = 15,754.29

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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.