Home / 14,516.82-21,778.88-7,124.76

Finding the Fourth Proportional to 14,516.82, 21,778.88 and 7,124.76

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Solution

The fourth proportional to 14,516.82, 21,778.88 and 7,124.76 is: 10,688.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,516.82 : 21,778.88 = 7,124.76 : x
  2. Step 2: Convert to fraction form
    14,516.82/21,778.88 = 7,124.76/x
  3. Step 3: Cross multiply
    14,516.82x = 21,778.88 × 7,124.76
  4. Step 4: Simplify right side
    14,516.82x = 155,169,257.45
  5. Step 5: Solve for x
    x = 155,169,257.45/14,516.82
  6. Step 6: Final answer
    x = 10,688.93

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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.