Home / 39,109.67-53,971.04-21,204.62

Finding the Fourth Proportional to 39,109.67, 53,971.04 and 21,204.62

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Solution

The fourth proportional to 39,109.67, 53,971.04 and 21,204.62 is: 29,262.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109.67 : 53,971.04 = 21,204.62 : x
  2. Step 2: Convert to fraction form
    39,109.67/53,971.04 = 21,204.62/x
  3. Step 3: Cross multiply
    39,109.67x = 53,971.04 × 21,204.62
  4. Step 4: Simplify right side
    39,109.67x = 1,144,435,379.75
  5. Step 5: Solve for x
    x = 1,144,435,379.75/39,109.67
  6. Step 6: Final answer
    x = 29,262.21

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1.5x scale

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.