Home / 20,359.88-30,549-12,962.42

Finding the Fourth Proportional to 20,359.88, 30,549 and 12,962.42

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Solution

The fourth proportional to 20,359.88, 30,549 and 12,962.42 is: 19,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.88 : 30,549 = 12,962.42 : x
  2. Step 2: Convert to fraction form
    20,359.88/30,549 = 12,962.42/x
  3. Step 3: Cross multiply
    20,359.88x = 30,549 × 12,962.42
  4. Step 4: Simplify right side
    20,359.88x = 395,988,968.58
  5. Step 5: Solve for x
    x = 395,988,968.58/20,359.88
  6. Step 6: Final answer
    x = 19,449.47

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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.