Home / 19,919.68-27,487.56-11,536.72

Finding the Fourth Proportional to 19,919.68, 27,487.56 and 11,536.72

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Solution

The fourth proportional to 19,919.68, 27,487.56 and 11,536.72 is: 15,919.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.68 : 27,487.56 = 11,536.72 : x
  2. Step 2: Convert to fraction form
    19,919.68/27,487.56 = 11,536.72/x
  3. Step 3: Cross multiply
    19,919.68x = 27,487.56 × 11,536.72
  4. Step 4: Simplify right side
    19,919.68x = 317,116,283.20
  5. Step 5: Solve for x
    x = 317,116,283.20/19,919.68
  6. Step 6: Final answer
    x = 15,919.75

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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.