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Finding the Fourth Proportional to 16,312.80, 22,511.04 and 8,860.80

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Solution

The fourth proportional to 16,312.80, 22,511.04 and 8,860.80 is: 12,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,312.80 : 22,511.04 = 8,860.80 : x
  2. Step 2: Convert to fraction form
    16,312.80/22,511.04 = 8,860.80/x
  3. Step 3: Cross multiply
    16,312.80x = 22,511.04 × 8,860.80
  4. Step 4: Simplify right side
    16,312.80x = 199,465,823.23
  5. Step 5: Solve for x
    x = 199,465,823.23/16,312.80
  6. Step 6: Final answer
    x = 12,227.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.