Home / 39,980.24-59,959.88-11,892.72

Finding the Fourth Proportional to 39,980.24, 59,959.88 and 11,892.72

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Solution

The fourth proportional to 39,980.24, 59,959.88 and 11,892.72 is: 17,835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.24 : 59,959.88 = 11,892.72 : x
  2. Step 2: Convert to fraction form
    39,980.24/59,959.88 = 11,892.72/x
  3. Step 3: Cross multiply
    39,980.24x = 59,959.88 × 11,892.72
  4. Step 4: Simplify right side
    39,980.24x = 713,086,064.07
  5. Step 5: Solve for x
    x = 713,086,064.07/39,980.24
  6. Step 6: Final answer
    x = 17,835.96

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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.