Home / 13,112.10-19,668.15-8,187.30

Finding the Fourth Proportional to 13,112.10, 19,668.15 and 8,187.30

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Solution

The fourth proportional to 13,112.10, 19,668.15 and 8,187.30 is: 12,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.10 : 19,668.15 = 8,187.30 : x
  2. Step 2: Convert to fraction form
    13,112.10/19,668.15 = 8,187.30/x
  3. Step 3: Cross multiply
    13,112.10x = 19,668.15 × 8,187.30
  4. Step 4: Simplify right side
    13,112.10x = 161,029,044.50
  5. Step 5: Solve for x
    x = 161,029,044.50/13,112.10
  6. Step 6: Final answer
    x = 12,280.95

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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.