Home / 14,111.76-19,471.68-8,143.68

Finding the Fourth Proportional to 14,111.76, 19,471.68 and 8,143.68

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Solution

The fourth proportional to 14,111.76, 19,471.68 and 8,143.68 is: 11,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,111.76 : 19,471.68 = 8,143.68 : x
  2. Step 2: Convert to fraction form
    14,111.76/19,471.68 = 8,143.68/x
  3. Step 3: Cross multiply
    14,111.76x = 19,471.68 × 8,143.68
  4. Step 4: Simplify right side
    14,111.76x = 158,571,130.98
  5. Step 5: Solve for x
    x = 158,571,130.98/14,111.76
  6. Step 6: Final answer
    x = 11,236.81

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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.