Home / 28,912.72-39,932.40-19,464.88

Finding the Fourth Proportional to 28,912.72, 39,932.40 and 19,464.88

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Solution

The fourth proportional to 28,912.72, 39,932.40 and 19,464.88 is: 26,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.72 : 39,932.40 = 19,464.88 : x
  2. Step 2: Convert to fraction form
    28,912.72/39,932.40 = 19,464.88/x
  3. Step 3: Cross multiply
    28,912.72x = 39,932.40 × 19,464.88
  4. Step 4: Simplify right side
    28,912.72x = 777,279,374.11
  5. Step 5: Solve for x
    x = 777,279,374.11/28,912.72
  6. Step 6: Final answer
    x = 26,883.65

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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.