Home / 20,989.50-28,962.87-14,198.34

Finding the Fourth Proportional to 20,989.50, 28,962.87 and 14,198.34

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Solution

The fourth proportional to 20,989.50, 28,962.87 and 14,198.34 is: 19,591.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.50 : 28,962.87 = 14,198.34 : x
  2. Step 2: Convert to fraction form
    20,989.50/28,962.87 = 14,198.34/x
  3. Step 3: Cross multiply
    20,989.50x = 28,962.87 × 14,198.34
  4. Step 4: Simplify right side
    20,989.50x = 411,224,675.64
  5. Step 5: Solve for x
    x = 411,224,675.64/20,989.50
  6. Step 6: Final answer
    x = 19,591.92

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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.