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Finding the Fourth Proportional to 18,128.79, 27,042.53 and 17,828.06

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Solution

The fourth proportional to 18,128.79, 27,042.53 and 17,828.06 is: 26,593.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.79 : 27,042.53 = 17,828.06 : x
  2. Step 2: Convert to fraction form
    18,128.79/27,042.53 = 17,828.06/x
  3. Step 3: Cross multiply
    18,128.79x = 27,042.53 × 17,828.06
  4. Step 4: Simplify right side
    18,128.79x = 482,115,623.04
  5. Step 5: Solve for x
    x = 482,115,623.04/18,128.79
  6. Step 6: Final answer
    x = 26,593.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.