Home / 39,973.66-59,963.09-13,318.51

Finding the Fourth Proportional to 39,973.66, 59,963.09 and 13,318.51

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Solution

The fourth proportional to 39,973.66, 59,963.09 and 13,318.51 is: 19,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,973.66 : 59,963.09 = 13,318.51 : x
  2. Step 2: Convert to fraction form
    39,973.66/59,963.09 = 13,318.51/x
  3. Step 3: Cross multiply
    39,973.66x = 59,963.09 × 13,318.51
  4. Step 4: Simplify right side
    39,973.66x = 798,619,013.80
  5. Step 5: Solve for x
    x = 798,619,013.80/39,973.66
  6. Step 6: Final answer
    x = 19,978.63

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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.