Home / 19,209.12-26,515.20-11,253.92

Finding the Fourth Proportional to 19,209.12, 26,515.20 and 11,253.92

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Solution

The fourth proportional to 19,209.12, 26,515.20 and 11,253.92 is: 15,534.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.12 : 26,515.20 = 11,253.92 : x
  2. Step 2: Convert to fraction form
    19,209.12/26,515.20 = 11,253.92/x
  3. Step 3: Cross multiply
    19,209.12x = 26,515.20 × 11,253.92
  4. Step 4: Simplify right side
    19,209.12x = 298,399,939.58
  5. Step 5: Solve for x
    x = 298,399,939.58/19,209.12
  6. Step 6: Final answer
    x = 15,534.28

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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.