Home / 28,209.56-38,911.59-18,151.11

Finding the Fourth Proportional to 28,209.56, 38,911.59 and 18,151.11

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Solution

The fourth proportional to 28,209.56, 38,911.59 and 18,151.11 is: 25,037.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.56 : 38,911.59 = 18,151.11 : x
  2. Step 2: Convert to fraction form
    28,209.56/38,911.59 = 18,151.11/x
  3. Step 3: Cross multiply
    28,209.56x = 38,911.59 × 18,151.11
  4. Step 4: Simplify right side
    28,209.56x = 706,288,550.36
  5. Step 5: Solve for x
    x = 706,288,550.36/28,209.56
  6. Step 6: Final answer
    x = 25,037.21

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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.