Home / 20,604.56-28,429.52-13,902.62

Finding the Fourth Proportional to 20,604.56, 28,429.52 and 13,902.62

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Solution

The fourth proportional to 20,604.56, 28,429.52 and 13,902.62 is: 19,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.56 : 28,429.52 = 13,902.62 : x
  2. Step 2: Convert to fraction form
    20,604.56/28,429.52 = 13,902.62/x
  3. Step 3: Cross multiply
    20,604.56x = 28,429.52 × 13,902.62
  4. Step 4: Simplify right side
    20,604.56x = 395,244,813.34
  5. Step 5: Solve for x
    x = 395,244,813.34/20,604.56
  6. Step 6: Final answer
    x = 19,182.40

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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.