Home / 14,039.96-19,378.86-8,731.76

Finding the Fourth Proportional to 14,039.96, 19,378.86 and 8,731.76

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Solution

The fourth proportional to 14,039.96, 19,378.86 and 8,731.76 is: 12,052.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,039.96 : 19,378.86 = 8,731.76 : x
  2. Step 2: Convert to fraction form
    14,039.96/19,378.86 = 8,731.76/x
  3. Step 3: Cross multiply
    14,039.96x = 19,378.86 × 8,731.76
  4. Step 4: Simplify right side
    14,039.96x = 169,211,554.59
  5. Step 5: Solve for x
    x = 169,211,554.59/14,039.96
  6. Step 6: Final answer
    x = 12,052.14

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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.