Home / 28,385.44-39,133.74-19,876.12

Finding the Fourth Proportional to 28,385.44, 39,133.74 and 19,876.12

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Solution

The fourth proportional to 28,385.44, 39,133.74 and 19,876.12 is: 27,402.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.44 : 39,133.74 = 19,876.12 : x
  2. Step 2: Convert to fraction form
    28,385.44/39,133.74 = 19,876.12/x
  3. Step 3: Cross multiply
    28,385.44x = 39,133.74 × 19,876.12
  4. Step 4: Simplify right side
    28,385.44x = 777,826,912.29
  5. Step 5: Solve for x
    x = 777,826,912.29/28,385.44
  6. Step 6: Final answer
    x = 27,402.32

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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.