Home / 19,958.96-27,536.68-12,890.16

Finding the Fourth Proportional to 19,958.96, 27,536.68 and 12,890.16

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Solution

The fourth proportional to 19,958.96, 27,536.68 and 12,890.16 is: 17,784.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.96 : 27,536.68 = 12,890.16 : x
  2. Step 2: Convert to fraction form
    19,958.96/27,536.68 = 12,890.16/x
  3. Step 3: Cross multiply
    19,958.96x = 27,536.68 × 12,890.16
  4. Step 4: Simplify right side
    19,958.96x = 354,952,211.07
  5. Step 5: Solve for x
    x = 354,952,211.07/19,958.96
  6. Step 6: Final answer
    x = 17,784.10

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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.