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Finding the Fourth Proportional to 18,677.91, 28,018.26 and 6,834.45

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Solution

The fourth proportional to 18,677.91, 28,018.26 and 6,834.45 is: 10,252.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.91 : 28,018.26 = 6,834.45 : x
  2. Step 2: Convert to fraction form
    18,677.91/28,018.26 = 6,834.45/x
  3. Step 3: Cross multiply
    18,677.91x = 28,018.26 × 6,834.45
  4. Step 4: Simplify right side
    18,677.91x = 191,489,397.06
  5. Step 5: Solve for x
    x = 191,489,397.06/18,677.91
  6. Step 6: Final answer
    x = 10,252.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.