Home / 19,278.38-28,755.51-17,506.64

Finding the Fourth Proportional to 19,278.38, 28,755.51 and 17,506.64

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Solution

The fourth proportional to 19,278.38, 28,755.51 and 17,506.64 is: 26,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.38 : 28,755.51 = 17,506.64 : x
  2. Step 2: Convert to fraction form
    19,278.38/28,755.51 = 17,506.64/x
  3. Step 3: Cross multiply
    19,278.38x = 28,755.51 × 17,506.64
  4. Step 4: Simplify right side
    19,278.38x = 503,412,217.81
  5. Step 5: Solve for x
    x = 503,412,217.81/19,278.38
  6. Step 6: Final answer
    x = 26,112.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.