Home / 19,538.82-26,935.23-12,812.78

Finding the Fourth Proportional to 19,538.82, 26,935.23 and 12,812.78

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Solution

The fourth proportional to 19,538.82, 26,935.23 and 12,812.78 is: 17,663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,538.82 : 26,935.23 = 12,812.78 : x
  2. Step 2: Convert to fraction form
    19,538.82/26,935.23 = 12,812.78/x
  3. Step 3: Cross multiply
    19,538.82x = 26,935.23 × 12,812.78
  4. Step 4: Simplify right side
    19,538.82x = 345,115,291.63
  5. Step 5: Solve for x
    x = 345,115,291.63/19,538.82
  6. Step 6: Final answer
    x = 17,663.06

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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.