Home / 20,898.78-28,842.35-11,944.58

Finding the Fourth Proportional to 20,898.78, 28,842.35 and 11,944.58

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Solution

The fourth proportional to 20,898.78, 28,842.35 and 11,944.58 is: 16,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.78 : 28,842.35 = 11,944.58 : x
  2. Step 2: Convert to fraction form
    20,898.78/28,842.35 = 11,944.58/x
  3. Step 3: Cross multiply
    20,898.78x = 28,842.35 × 11,944.58
  4. Step 4: Simplify right side
    20,898.78x = 344,509,553.03
  5. Step 5: Solve for x
    x = 344,509,553.03/20,898.78
  6. Step 6: Final answer
    x = 16,484.67

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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.