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Finding the Fourth Proportional to 18,646.95, 28,072.49 and 17,013.99

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Solution

The fourth proportional to 18,646.95, 28,072.49 and 17,013.99 is: 25,614.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.95 : 28,072.49 = 17,013.99 : x
  2. Step 2: Convert to fraction form
    18,646.95/28,072.49 = 17,013.99/x
  3. Step 3: Cross multiply
    18,646.95x = 28,072.49 × 17,013.99
  4. Step 4: Simplify right side
    18,646.95x = 477,625,106.67
  5. Step 5: Solve for x
    x = 477,625,106.67/18,646.95
  6. Step 6: Final answer
    x = 25,614.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.