Home / 39,720.65-59,490.23-18,958.73

Finding the Fourth Proportional to 39,720.65, 59,490.23 and 18,958.73

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Solution

The fourth proportional to 39,720.65, 59,490.23 and 18,958.73 is: 28,394.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.65 : 59,490.23 = 18,958.73 : x
  2. Step 2: Convert to fraction form
    39,720.65/59,490.23 = 18,958.73/x
  3. Step 3: Cross multiply
    39,720.65x = 59,490.23 × 18,958.73
  4. Step 4: Simplify right side
    39,720.65x = 1,127,858,815.96
  5. Step 5: Solve for x
    x = 1,127,858,815.96/39,720.65
  6. Step 6: Final answer
    x = 28,394.78

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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.