Home / 37,972.88-52,403.28-20,978

Finding the Fourth Proportional to 37,972.88, 52,403.28 and 20,978

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Solution

The fourth proportional to 37,972.88, 52,403.28 and 20,978 is: 28,950.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,972.88 : 52,403.28 = 20,978 : x
  2. Step 2: Convert to fraction form
    37,972.88/52,403.28 = 20,978/x
  3. Step 3: Cross multiply
    37,972.88x = 52,403.28 × 20,978
  4. Step 4: Simplify right side
    37,972.88x = 1,099,316,007.84
  5. Step 5: Solve for x
    x = 1,099,316,007.84/37,972.88
  6. Step 6: Final answer
    x = 28,950.03

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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.