Home / 28,862.16-39,816.11-18,786.92

Finding the Fourth Proportional to 28,862.16, 39,816.11 and 18,786.92

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Solution

The fourth proportional to 28,862.16, 39,816.11 and 18,786.92 is: 25,917.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.16 : 39,816.11 = 18,786.92 : x
  2. Step 2: Convert to fraction form
    28,862.16/39,816.11 = 18,786.92/x
  3. Step 3: Cross multiply
    28,862.16x = 39,816.11 × 18,786.92
  4. Step 4: Simplify right side
    28,862.16x = 748,021,780.27
  5. Step 5: Solve for x
    x = 748,021,780.27/28,862.16
  6. Step 6: Final answer
    x = 25,917.04

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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.