Home / 20,045,378.72-27,662,640.72-10,878,021.56

Finding the Fourth Proportional to 20,045,378.72, 27,662,640.72 and 10,878,021.56

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Solution

The fourth proportional to 20,045,378.72, 27,662,640.72 and 10,878,021.56 is: 15,011,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045,378.72 : 27,662,640.72 = 10,878,021.56 : x
  2. Step 2: Convert to fraction form
    20,045,378.72/27,662,640.72 = 10,878,021.56/x
  3. Step 3: Cross multiply
    20,045,378.72x = 27,662,640.72 × 10,878,021.56
  4. Step 4: Simplify right side
    20,045,378.72x = 300,914,802,158,693.94
  5. Step 5: Solve for x
    x = 300,914,802,158,693.94/20,045,378.72
  6. Step 6: Final answer
    x = 15,011,679.57

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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.