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Finding the Fourth Proportional to 18,834.33, 28,217.06 and 8,820.71

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Solution

The fourth proportional to 18,834.33, 28,217.06 and 8,820.71 is: 13,214.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.33 : 28,217.06 = 8,820.71 : x
  2. Step 2: Convert to fraction form
    18,834.33/28,217.06 = 8,820.71/x
  3. Step 3: Cross multiply
    18,834.33x = 28,217.06 × 8,820.71
  4. Step 4: Simplify right side
    18,834.33x = 248,894,384.28
  5. Step 5: Solve for x
    x = 248,894,384.28/18,834.33
  6. Step 6: Final answer
    x = 13,214.93

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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.