Home / 39,765.21-54,877.04-21,617.16

Finding the Fourth Proportional to 39,765.21, 54,877.04 and 21,617.16

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Solution

The fourth proportional to 39,765.21, 54,877.04 and 21,617.16 is: 29,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.21 : 54,877.04 = 21,617.16 : x
  2. Step 2: Convert to fraction form
    39,765.21/54,877.04 = 21,617.16/x
  3. Step 3: Cross multiply
    39,765.21x = 54,877.04 × 21,617.16
  4. Step 4: Simplify right side
    39,765.21x = 1,186,285,479.62
  5. Step 5: Solve for x
    x = 1,186,285,479.62/39,765.21
  6. Step 6: Final answer
    x = 29,832.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.