Home / 39,980.88-59,952.60-11,890.56

Finding the Fourth Proportional to 39,980.88, 59,952.60 and 11,890.56

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Solution

The fourth proportional to 39,980.88, 59,952.60 and 11,890.56 is: 17,830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.88 : 59,952.60 = 11,890.56 : x
  2. Step 2: Convert to fraction form
    39,980.88/59,952.60 = 11,890.56/x
  3. Step 3: Cross multiply
    39,980.88x = 59,952.60 × 11,890.56
  4. Step 4: Simplify right side
    39,980.88x = 712,869,987.46
  5. Step 5: Solve for x
    x = 712,869,987.46/39,980.88
  6. Step 6: Final answer
    x = 17,830.27

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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.