Home / 39,730.77-54,828.32-21,581.42

Finding the Fourth Proportional to 39,730.77, 54,828.32 and 21,581.42

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Solution

The fourth proportional to 39,730.77, 54,828.32 and 21,581.42 is: 29,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,730.77 : 54,828.32 = 21,581.42 : x
  2. Step 2: Convert to fraction form
    39,730.77/54,828.32 = 21,581.42/x
  3. Step 3: Cross multiply
    39,730.77x = 54,828.32 × 21,581.42
  4. Step 4: Simplify right side
    39,730.77x = 1,183,272,619.77
  5. Step 5: Solve for x
    x = 1,183,272,619.77/39,730.77
  6. Step 6: Final answer
    x = 29,782.27

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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.