Home / 20,318.32-30,430.09-19,757.67

Finding the Fourth Proportional to 20,318.32, 30,430.09 and 19,757.67

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Solution

The fourth proportional to 20,318.32, 30,430.09 and 19,757.67 is: 29,590.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.32 : 30,430.09 = 19,757.67 : x
  2. Step 2: Convert to fraction form
    20,318.32/30,430.09 = 19,757.67/x
  3. Step 3: Cross multiply
    20,318.32x = 30,430.09 × 19,757.67
  4. Step 4: Simplify right side
    20,318.32x = 601,227,676.29
  5. Step 5: Solve for x
    x = 601,227,676.29/20,318.32
  6. Step 6: Final answer
    x = 29,590.42

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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.