Home / 39,160.81-54,041.96-21,255.81

Finding the Fourth Proportional to 39,160.81, 54,041.96 and 21,255.81

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Solution

The fourth proportional to 39,160.81, 54,041.96 and 21,255.81 is: 29,333.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.81 : 54,041.96 = 21,255.81 : x
  2. Step 2: Convert to fraction form
    39,160.81/54,041.96 = 21,255.81/x
  3. Step 3: Cross multiply
    39,160.81x = 54,041.96 × 21,255.81
  4. Step 4: Simplify right side
    39,160.81x = 1,148,705,633.79
  5. Step 5: Solve for x
    x = 1,148,705,633.79/39,160.81
  6. Step 6: Final answer
    x = 29,333.04

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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.