Home / 14,112.30-19,470.60-8,143.20

Finding the Fourth Proportional to 14,112.30, 19,470.60 and 8,143.20

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Solution

The fourth proportional to 14,112.30, 19,470.60 and 8,143.20 is: 11,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112.30 : 19,470.60 = 8,143.20 : x
  2. Step 2: Convert to fraction form
    14,112.30/19,470.60 = 8,143.20/x
  3. Step 3: Cross multiply
    14,112.30x = 19,470.60 × 8,143.20
  4. Step 4: Simplify right side
    14,112.30x = 158,552,989.92
  5. Step 5: Solve for x
    x = 158,552,989.92/14,112.30
  6. Step 6: Final answer
    x = 11,235.09

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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.