Home / 39,720.40-59,489.86-18,958.48

Finding the Fourth Proportional to 39,720.40, 59,489.86 and 18,958.48

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Solution

The fourth proportional to 39,720.40, 59,489.86 and 18,958.48 is: 28,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.40 : 59,489.86 = 18,958.48 : x
  2. Step 2: Convert to fraction form
    39,720.40/59,489.86 = 18,958.48/x
  3. Step 3: Cross multiply
    39,720.40x = 59,489.86 × 18,958.48
  4. Step 4: Simplify right side
    39,720.40x = 1,127,837,321.01
  5. Step 5: Solve for x
    x = 1,127,837,321.01/39,720.40
  6. Step 6: Final answer
    x = 28,394.41

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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.