Home / 20,621.20-30,899.82-14,308.42

Finding the Fourth Proportional to 20,621.20, 30,899.82 and 14,308.42

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Solution

The fourth proportional to 20,621.20, 30,899.82 and 14,308.42 is: 21,440.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.20 : 30,899.82 = 14,308.42 : x
  2. Step 2: Convert to fraction form
    20,621.20/30,899.82 = 14,308.42/x
  3. Step 3: Cross multiply
    20,621.20x = 30,899.82 × 14,308.42
  4. Step 4: Simplify right side
    20,621.20x = 442,127,602.48
  5. Step 5: Solve for x
    x = 442,127,602.48/20,621.20
  6. Step 6: Final answer
    x = 21,440.44

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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.