Home / 12,295.20-16,971.12-8,104.80

Finding the Fourth Proportional to 12,295.20, 16,971.12 and 8,104.80

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Solution

The fourth proportional to 12,295.20, 16,971.12 and 8,104.80 is: 11,187.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,295.20 : 16,971.12 = 8,104.80 : x
  2. Step 2: Convert to fraction form
    12,295.20/16,971.12 = 8,104.80/x
  3. Step 3: Cross multiply
    12,295.20x = 16,971.12 × 8,104.80
  4. Step 4: Simplify right side
    12,295.20x = 137,547,533.38
  5. Step 5: Solve for x
    x = 137,547,533.38/12,295.20
  6. Step 6: Final answer
    x = 11,187.09

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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.