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Finding the Fourth Proportional to 18,733.41, 28,113.98 and 8,872.71

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Solution

The fourth proportional to 18,733.41, 28,113.98 and 8,872.71 is: 13,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,733.41 : 28,113.98 = 8,872.71 : x
  2. Step 2: Convert to fraction form
    18,733.41/28,113.98 = 8,872.71/x
  3. Step 3: Cross multiply
    18,733.41x = 28,113.98 × 8,872.71
  4. Step 4: Simplify right side
    18,733.41x = 249,447,147.12
  5. Step 5: Solve for x
    x = 249,447,147.12/18,733.41
  6. Step 6: Final answer
    x = 13,315.63

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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.