Home / 39,485.55-54,488.41-21,581.17

Finding the Fourth Proportional to 39,485.55, 54,488.41 and 21,581.17

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Solution

The fourth proportional to 39,485.55, 54,488.41 and 21,581.17 is: 29,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,485.55 : 54,488.41 = 21,581.17 : x
  2. Step 2: Convert to fraction form
    39,485.55/54,488.41 = 21,581.17/x
  3. Step 3: Cross multiply
    39,485.55x = 54,488.41 × 21,581.17
  4. Step 4: Simplify right side
    39,485.55x = 1,175,923,639.24
  5. Step 5: Solve for x
    x = 1,175,923,639.24/39,485.55
  6. Step 6: Final answer
    x = 29,781.11

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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.