Home / 39,919.10-59,878.64-13,623.84

Finding the Fourth Proportional to 39,919.10, 59,878.64 and 13,623.84

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Solution

The fourth proportional to 39,919.10, 59,878.64 and 13,623.84 is: 20,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,919.10 : 59,878.64 = 13,623.84 : x
  2. Step 2: Convert to fraction form
    39,919.10/59,878.64 = 13,623.84/x
  3. Step 3: Cross multiply
    39,919.10x = 59,878.64 × 13,623.84
  4. Step 4: Simplify right side
    39,919.10x = 815,777,010.78
  5. Step 5: Solve for x
    x = 815,777,010.78/39,919.10
  6. Step 6: Final answer
    x = 20,435.76

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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.