Home / 38,815.79-53,570.26-21,589.90

Finding the Fourth Proportional to 38,815.79, 53,570.26 and 21,589.90

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Solution

The fourth proportional to 38,815.79, 53,570.26 and 21,589.90 is: 29,796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,815.79 : 53,570.26 = 21,589.90 : x
  2. Step 2: Convert to fraction form
    38,815.79/53,570.26 = 21,589.90/x
  3. Step 3: Cross multiply
    38,815.79x = 53,570.26 × 21,589.90
  4. Step 4: Simplify right side
    38,815.79x = 1,156,576,826.10
  5. Step 5: Solve for x
    x = 1,156,576,826.10/38,815.79
  6. Step 6: Final answer
    x = 29,796.55

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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.