Home / 20,631.39-30,927.84-10,758.92

Finding the Fourth Proportional to 20,631.39, 30,927.84 and 10,758.92

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Solution

The fourth proportional to 20,631.39, 30,927.84 and 10,758.92 is: 16,128.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.39 : 30,927.84 = 10,758.92 : x
  2. Step 2: Convert to fraction form
    20,631.39/30,927.84 = 10,758.92/x
  3. Step 3: Cross multiply
    20,631.39x = 30,927.84 × 10,758.92
  4. Step 4: Simplify right side
    20,631.39x = 332,750,001.69
  5. Step 5: Solve for x
    x = 332,750,001.69/20,631.39
  6. Step 6: Final answer
    x = 16,128.34

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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.