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Finding the Fourth Proportional to 18,935.95, 26,110.06 and 15,522.25

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Solution

The fourth proportional to 18,935.95, 26,110.06 and 15,522.25 is: 21,403.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.95 : 26,110.06 = 15,522.25 : x
  2. Step 2: Convert to fraction form
    18,935.95/26,110.06 = 15,522.25/x
  3. Step 3: Cross multiply
    18,935.95x = 26,110.06 × 15,522.25
  4. Step 4: Simplify right side
    18,935.95x = 405,286,878.84
  5. Step 5: Solve for x
    x = 405,286,878.84/18,935.95
  6. Step 6: Final answer
    x = 21,403.04

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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.