Home / 20,319.36-28,043.37-11,367.24

Finding the Fourth Proportional to 20,319.36, 28,043.37 and 11,367.24

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Solution

The fourth proportional to 20,319.36, 28,043.37 and 11,367.24 is: 15,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.36 : 28,043.37 = 11,367.24 : x
  2. Step 2: Convert to fraction form
    20,319.36/28,043.37 = 11,367.24/x
  3. Step 3: Cross multiply
    20,319.36x = 28,043.37 × 11,367.24
  4. Step 4: Simplify right side
    20,319.36x = 318,775,717.20
  5. Step 5: Solve for x
    x = 318,775,717.20/20,319.36
  6. Step 6: Final answer
    x = 15,688.28

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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.