Home / 20,743.84-31,124.96-10,880.80

Finding the Fourth Proportional to 20,743.84, 31,124.96 and 10,880.80

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Solution

The fourth proportional to 20,743.84, 31,124.96 and 10,880.80 is: 16,326.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.84 : 31,124.96 = 10,880.80 : x
  2. Step 2: Convert to fraction form
    20,743.84/31,124.96 = 10,880.80/x
  3. Step 3: Cross multiply
    20,743.84x = 31,124.96 × 10,880.80
  4. Step 4: Simplify right side
    20,743.84x = 338,664,464.77
  5. Step 5: Solve for x
    x = 338,664,464.77/20,743.84
  6. Step 6: Final answer
    x = 16,326.03

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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.