Home / 28,176.30-38,882.43-18,761.94

Finding the Fourth Proportional to 28,176.30, 38,882.43 and 18,761.94

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Solution

The fourth proportional to 28,176.30, 38,882.43 and 18,761.94 is: 25,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.30 : 38,882.43 = 18,761.94 : x
  2. Step 2: Convert to fraction form
    28,176.30/38,882.43 = 18,761.94/x
  3. Step 3: Cross multiply
    28,176.30x = 38,882.43 × 18,761.94
  4. Step 4: Simplify right side
    28,176.30x = 729,509,818.71
  5. Step 5: Solve for x
    x = 729,509,818.71/28,176.30
  6. Step 6: Final answer
    x = 25,890.90

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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.