Home / 19,511.84-26,926.80-11,128.16

Finding the Fourth Proportional to 19,511.84, 26,926.80 and 11,128.16

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Solution

The fourth proportional to 19,511.84, 26,926.80 and 11,128.16 is: 15,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.84 : 26,926.80 = 11,128.16 : x
  2. Step 2: Convert to fraction form
    19,511.84/26,926.80 = 11,128.16/x
  3. Step 3: Cross multiply
    19,511.84x = 26,926.80 × 11,128.16
  4. Step 4: Simplify right side
    19,511.84x = 299,645,738.69
  5. Step 5: Solve for x
    x = 299,645,738.69/19,511.84
  6. Step 6: Final answer
    x = 15,357.12

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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.