Home / 38,640,013.80-57,960,020.70-20,724,109.80

Finding the Fourth Proportional to 38,640,013.80, 57,960,020.70 and 20,724,109.80

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Solution

The fourth proportional to 38,640,013.80, 57,960,020.70 and 20,724,109.80 is: 31,086,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640,013.80 : 57,960,020.70 = 20,724,109.80 : x
  2. Step 2: Convert to fraction form
    38,640,013.80/57,960,020.70 = 20,724,109.80/x
  3. Step 3: Cross multiply
    38,640,013.80x = 57,960,020.70 × 20,724,109.80
  4. Step 4: Simplify right side
    38,640,013.80x = 1,201,169,832,997,073
  5. Step 5: Solve for x
    x = 1,201,169,832,997,073/38,640,013.80
  6. Step 6: Final answer
    x = 31,086,164.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.