Home / 39,878.72-59,804.08-11,791.28

Finding the Fourth Proportional to 39,878.72, 59,804.08 and 11,791.28

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Solution

The fourth proportional to 39,878.72, 59,804.08 and 11,791.28 is: 17,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,878.72 : 59,804.08 = 11,791.28 : x
  2. Step 2: Convert to fraction form
    39,878.72/59,804.08 = 11,791.28/x
  3. Step 3: Cross multiply
    39,878.72x = 59,804.08 × 11,791.28
  4. Step 4: Simplify right side
    39,878.72x = 705,166,652.42
  5. Step 5: Solve for x
    x = 705,166,652.42/39,878.72
  6. Step 6: Final answer
    x = 17,682.78

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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.