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Finding the Fourth Proportional to 18,398.56, 27,415.04 and 17,505.92

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Solution

The fourth proportional to 18,398.56, 27,415.04 and 17,505.92 is: 26,084.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.56 : 27,415.04 = 17,505.92 : x
  2. Step 2: Convert to fraction form
    18,398.56/27,415.04 = 17,505.92/x
  3. Step 3: Cross multiply
    18,398.56x = 27,415.04 × 17,505.92
  4. Step 4: Simplify right side
    18,398.56x = 479,925,497.04
  5. Step 5: Solve for x
    x = 479,925,497.04/18,398.56
  6. Step 6: Final answer
    x = 26,084.95

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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.