Home / 20,628.26-30,943.46-7,977.98

Finding the Fourth Proportional to 20,628.26, 30,943.46 and 7,977.98

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Solution

The fourth proportional to 20,628.26, 30,943.46 and 7,977.98 is: 11,967.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.26 : 30,943.46 = 7,977.98 : x
  2. Step 2: Convert to fraction form
    20,628.26/30,943.46 = 7,977.98/x
  3. Step 3: Cross multiply
    20,628.26x = 30,943.46 × 7,977.98
  4. Step 4: Simplify right side
    20,628.26x = 246,866,342.48
  5. Step 5: Solve for x
    x = 246,866,342.48/20,628.26
  6. Step 6: Final answer
    x = 11,967.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.