Home / 39,987.75-59,933.91-18,611.70

Finding the Fourth Proportional to 39,987.75, 59,933.91 and 18,611.70

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Solution

The fourth proportional to 39,987.75, 59,933.91 and 18,611.70 is: 27,895.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.75 : 59,933.91 = 18,611.70 : x
  2. Step 2: Convert to fraction form
    39,987.75/59,933.91 = 18,611.70/x
  3. Step 3: Cross multiply
    39,987.75x = 59,933.91 × 18,611.70
  4. Step 4: Simplify right side
    39,987.75x = 1,115,471,693.10
  5. Step 5: Solve for x
    x = 1,115,471,693.10/39,987.75
  6. Step 6: Final answer
    x = 27,895.34

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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.