Home / 39,868.56-59,789.68-13,208.40

Finding the Fourth Proportional to 39,868.56, 59,789.68 and 13,208.40

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Solution

The fourth proportional to 39,868.56, 59,789.68 and 13,208.40 is: 19,808.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.56 : 59,789.68 = 13,208.40 : x
  2. Step 2: Convert to fraction form
    39,868.56/59,789.68 = 13,208.40/x
  3. Step 3: Cross multiply
    39,868.56x = 59,789.68 × 13,208.40
  4. Step 4: Simplify right side
    39,868.56x = 789,726,009.31
  5. Step 5: Solve for x
    x = 789,726,009.31/39,868.56
  6. Step 6: Final answer
    x = 19,808.24

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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.