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Finding the Fourth Proportional to 18,646.70, 28,072.12 and 17,013.74

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Solution

The fourth proportional to 18,646.70, 28,072.12 and 17,013.74 is: 25,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.70 : 28,072.12 = 17,013.74 : x
  2. Step 2: Convert to fraction form
    18,646.70/28,072.12 = 17,013.74/x
  3. Step 3: Cross multiply
    18,646.70x = 28,072.12 × 17,013.74
  4. Step 4: Simplify right side
    18,646.70x = 477,611,665.86
  5. Step 5: Solve for x
    x = 477,611,665.86/18,646.70
  6. Step 6: Final answer
    x = 25,613.74

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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.