Home / 39,362.71-54,320.09-21,457.32

Finding the Fourth Proportional to 39,362.71, 54,320.09 and 21,457.32

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Solution

The fourth proportional to 39,362.71, 54,320.09 and 21,457.32 is: 29,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,362.71 : 54,320.09 = 21,457.32 : x
  2. Step 2: Convert to fraction form
    39,362.71/54,320.09 = 21,457.32/x
  3. Step 3: Cross multiply
    39,362.71x = 54,320.09 × 21,457.32
  4. Step 4: Simplify right side
    39,362.71x = 1,165,563,553.56
  5. Step 5: Solve for x
    x = 1,165,563,553.56/39,362.71
  6. Step 6: Final answer
    x = 29,610.86

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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.