Home / 19,512.34-26,928.57-11,128.66

Finding the Fourth Proportional to 19,512.34, 26,928.57 and 11,128.66

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Solution

The fourth proportional to 19,512.34, 26,928.57 and 11,128.66 is: 15,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,512.34 : 26,928.57 = 11,128.66 : x
  2. Step 2: Convert to fraction form
    19,512.34/26,928.57 = 11,128.66/x
  3. Step 3: Cross multiply
    19,512.34x = 26,928.57 × 11,128.66
  4. Step 4: Simplify right side
    19,512.34x = 299,678,899.82
  5. Step 5: Solve for x
    x = 299,678,899.82/19,512.34
  6. Step 6: Final answer
    x = 15,358.43

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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.