Home / 21,329.10-31,993.65-16,922.70

Finding the Fourth Proportional to 21,329.10, 31,993.65 and 16,922.70

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Solution

The fourth proportional to 21,329.10, 31,993.65 and 16,922.70 is: 25,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.10 : 31,993.65 = 16,922.70 : x
  2. Step 2: Convert to fraction form
    21,329.10/31,993.65 = 16,922.70/x
  3. Step 3: Cross multiply
    21,329.10x = 31,993.65 × 16,922.70
  4. Step 4: Simplify right side
    21,329.10x = 541,418,940.86
  5. Step 5: Solve for x
    x = 541,418,940.86/21,329.10
  6. Step 6: Final answer
    x = 25,384.05

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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.