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Finding the Fourth Proportional to 18,378.16, 27,402.59 and 18,046.47

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Solution

The fourth proportional to 18,378.16, 27,402.59 and 18,046.47 is: 26,908.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.16 : 27,402.59 = 18,046.47 : x
  2. Step 2: Convert to fraction form
    18,378.16/27,402.59 = 18,046.47/x
  3. Step 3: Cross multiply
    18,378.16x = 27,402.59 × 18,046.47
  4. Step 4: Simplify right side
    18,378.16x = 494,520,018.36
  5. Step 5: Solve for x
    x = 494,520,018.36/18,378.16
  6. Step 6: Final answer
    x = 26,908.03

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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.