Home / 39,989.79-59,986.31-13,697.19

Finding the Fourth Proportional to 39,989.79, 59,986.31 and 13,697.19

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Solution

The fourth proportional to 39,989.79, 59,986.31 and 13,697.19 is: 20,546.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,989.79 : 59,986.31 = 13,697.19 : x
  2. Step 2: Convert to fraction form
    39,989.79/59,986.31 = 13,697.19/x
  3. Step 3: Cross multiply
    39,989.79x = 59,986.31 × 13,697.19
  4. Step 4: Simplify right side
    39,989.79x = 821,643,816.98
  5. Step 5: Solve for x
    x = 821,643,816.98/39,989.79
  6. Step 6: Final answer
    x = 20,546.34

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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.