Home / 37,670.72-51,986.40-20,905.28

Finding the Fourth Proportional to 37,670.72, 51,986.40 and 20,905.28

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Solution

The fourth proportional to 37,670.72, 51,986.40 and 20,905.28 is: 28,849.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,670.72 : 51,986.40 = 20,905.28 : x
  2. Step 2: Convert to fraction form
    37,670.72/51,986.40 = 20,905.28/x
  3. Step 3: Cross multiply
    37,670.72x = 51,986.40 × 20,905.28
  4. Step 4: Simplify right side
    37,670.72x = 1,086,790,248.19
  5. Step 5: Solve for x
    x = 1,086,790,248.19/37,670.72
  6. Step 6: Final answer
    x = 28,849.73

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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.