Home / 20,972.99-28,943.41-12,022.18

Finding the Fourth Proportional to 20,972.99, 28,943.41 and 12,022.18

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Solution

The fourth proportional to 20,972.99, 28,943.41 and 12,022.18 is: 16,591.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.99 : 28,943.41 = 12,022.18 : x
  2. Step 2: Convert to fraction form
    20,972.99/28,943.41 = 12,022.18/x
  3. Step 3: Cross multiply
    20,972.99x = 28,943.41 × 12,022.18
  4. Step 4: Simplify right side
    20,972.99x = 347,962,967.77
  5. Step 5: Solve for x
    x = 347,962,967.77/20,972.99
  6. Step 6: Final answer
    x = 16,591.01

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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.