Home / 19,881.68-27,435.12-10,928.96

Finding the Fourth Proportional to 19,881.68, 27,435.12 and 10,928.96

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Solution

The fourth proportional to 19,881.68, 27,435.12 and 10,928.96 is: 15,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.68 : 27,435.12 = 10,928.96 : x
  2. Step 2: Convert to fraction form
    19,881.68/27,435.12 = 10,928.96/x
  3. Step 3: Cross multiply
    19,881.68x = 27,435.12 × 10,928.96
  4. Step 4: Simplify right side
    19,881.68x = 299,837,329.08
  5. Step 5: Solve for x
    x = 299,837,329.08/19,881.68
  6. Step 6: Final answer
    x = 15,081.09

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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.