Home / 39,384.30-54,351.03-21,479.96

Finding the Fourth Proportional to 39,384.30, 54,351.03 and 21,479.96

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Solution

The fourth proportional to 39,384.30, 54,351.03 and 21,479.96 is: 29,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.30 : 54,351.03 = 21,479.96 : x
  2. Step 2: Convert to fraction form
    39,384.30/54,351.03 = 21,479.96/x
  3. Step 3: Cross multiply
    39,384.30x = 54,351.03 × 21,479.96
  4. Step 4: Simplify right side
    39,384.30x = 1,167,457,950.36
  5. Step 5: Solve for x
    x = 1,167,457,950.36/39,384.30
  6. Step 6: Final answer
    x = 29,642.72

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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.