Home / 20,429.90-28,196.30-12,476.73

Finding the Fourth Proportional to 20,429.90, 28,196.30 and 12,476.73

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Solution

The fourth proportional to 20,429.90, 28,196.30 and 12,476.73 is: 17,219.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.90 : 28,196.30 = 12,476.73 : x
  2. Step 2: Convert to fraction form
    20,429.90/28,196.30 = 12,476.73/x
  3. Step 3: Cross multiply
    20,429.90x = 28,196.30 × 12,476.73
  4. Step 4: Simplify right side
    20,429.90x = 351,797,653.29
  5. Step 5: Solve for x
    x = 351,797,653.29/20,429.90
  6. Step 6: Final answer
    x = 17,219.75

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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.