Home / 39,484.05-54,487.08-21,579.18

Finding the Fourth Proportional to 39,484.05, 54,487.08 and 21,579.18

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Solution

The fourth proportional to 39,484.05, 54,487.08 and 21,579.18 is: 29,778.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,484.05 : 54,487.08 = 21,579.18 : x
  2. Step 2: Convert to fraction form
    39,484.05/54,487.08 = 21,579.18/x
  3. Step 3: Cross multiply
    39,484.05x = 54,487.08 × 21,579.18
  4. Step 4: Simplify right side
    39,484.05x = 1,175,786,506.99
  5. Step 5: Solve for x
    x = 1,175,786,506.99/39,484.05
  6. Step 6: Final answer
    x = 29,778.77

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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.