Home / 19,089.47-26,333.30-11,128.79

Finding the Fourth Proportional to 19,089.47, 26,333.30 and 11,128.79

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Solution

The fourth proportional to 19,089.47, 26,333.30 and 11,128.79 is: 15,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,089.47 : 26,333.30 = 11,128.79 : x
  2. Step 2: Convert to fraction form
    19,089.47/26,333.30 = 11,128.79/x
  3. Step 3: Cross multiply
    19,089.47x = 26,333.30 × 11,128.79
  4. Step 4: Simplify right side
    19,089.47x = 293,057,859.36
  5. Step 5: Solve for x
    x = 293,057,859.36/19,089.47
  6. Step 6: Final answer
    x = 15,351.80

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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.