Home / 36,978.36-51,030.18-20,211.36

Finding the Fourth Proportional to 36,978.36, 51,030.18 and 20,211.36

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Solution

The fourth proportional to 36,978.36, 51,030.18 and 20,211.36 is: 27,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,978.36 : 51,030.18 = 20,211.36 : x
  2. Step 2: Convert to fraction form
    36,978.36/51,030.18 = 20,211.36/x
  3. Step 3: Cross multiply
    36,978.36x = 51,030.18 × 20,211.36
  4. Step 4: Simplify right side
    36,978.36x = 1,031,389,338.84
  5. Step 5: Solve for x
    x = 1,031,389,338.84/36,978.36
  6. Step 6: Final answer
    x = 27,891.70

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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.