Home / 39,620.10-54,675.66-21,715.11

Finding the Fourth Proportional to 39,620.10, 54,675.66 and 21,715.11

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Solution

The fourth proportional to 39,620.10, 54,675.66 and 21,715.11 is: 29,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,620.10 : 54,675.66 = 21,715.11 : x
  2. Step 2: Convert to fraction form
    39,620.10/54,675.66 = 21,715.11/x
  3. Step 3: Cross multiply
    39,620.10x = 54,675.66 × 21,715.11
  4. Step 4: Simplify right side
    39,620.10x = 1,187,287,971.22
  5. Step 5: Solve for x
    x = 1,187,287,971.22/39,620.10
  6. Step 6: Final answer
    x = 29,966.81

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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.