Home / 20,947.11-28,883.36-15,271.85

Finding the Fourth Proportional to 20,947.11, 28,883.36 and 15,271.85

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Solution

The fourth proportional to 20,947.11, 28,883.36 and 15,271.85 is: 21,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.11 : 28,883.36 = 15,271.85 : x
  2. Step 2: Convert to fraction form
    20,947.11/28,883.36 = 15,271.85/x
  3. Step 3: Cross multiply
    20,947.11x = 28,883.36 × 15,271.85
  4. Step 4: Simplify right side
    20,947.11x = 441,102,120.64
  5. Step 5: Solve for x
    x = 441,102,120.64/20,947.11
  6. Step 6: Final answer
    x = 21,057.90

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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.