Home / 20,193.59-27,880.88-12,642.98

Finding the Fourth Proportional to 20,193.59, 27,880.88 and 12,642.98

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Solution

The fourth proportional to 20,193.59, 27,880.88 and 12,642.98 is: 17,455.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.59 : 27,880.88 = 12,642.98 : x
  2. Step 2: Convert to fraction form
    20,193.59/27,880.88 = 12,642.98/x
  3. Step 3: Cross multiply
    20,193.59x = 27,880.88 × 12,642.98
  4. Step 4: Simplify right side
    20,193.59x = 352,497,205.60
  5. Step 5: Solve for x
    x = 352,497,205.60/20,193.59
  6. Step 6: Final answer
    x = 17,455.89

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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.