Home / 20,634.48-30,969.39-20,479.16

Finding the Fourth Proportional to 20,634.48, 30,969.39 and 20,479.16

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Solution

The fourth proportional to 20,634.48, 30,969.39 and 20,479.16 is: 30,736.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.48 : 30,969.39 = 20,479.16 : x
  2. Step 2: Convert to fraction form
    20,634.48/30,969.39 = 20,479.16/x
  3. Step 3: Cross multiply
    20,634.48x = 30,969.39 × 20,479.16
  4. Step 4: Simplify right side
    20,634.48x = 634,227,092.91
  5. Step 5: Solve for x
    x = 634,227,092.91/20,634.48
  6. Step 6: Final answer
    x = 30,736.28

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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.