Home / 28,953.72-39,947.31-18,878.54

Finding the Fourth Proportional to 28,953.72, 39,947.31 and 18,878.54

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Solution

The fourth proportional to 28,953.72, 39,947.31 and 18,878.54 is: 26,046.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,953.72 : 39,947.31 = 18,878.54 : x
  2. Step 2: Convert to fraction form
    28,953.72/39,947.31 = 18,878.54/x
  3. Step 3: Cross multiply
    28,953.72x = 39,947.31 × 18,878.54
  4. Step 4: Simplify right side
    28,953.72x = 754,146,689.99
  5. Step 5: Solve for x
    x = 754,146,689.99/28,953.72
  6. Step 6: Final answer
    x = 26,046.63

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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.