Home / 12,688.34-19,034.34-3,923.94

Finding the Fourth Proportional to 12,688.34, 19,034.34 and 3,923.94

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Solution

The fourth proportional to 12,688.34, 19,034.34 and 3,923.94 is: 5,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.34 : 19,034.34 = 3,923.94 : x
  2. Step 2: Convert to fraction form
    12,688.34/19,034.34 = 3,923.94/x
  3. Step 3: Cross multiply
    12,688.34x = 19,034.34 × 3,923.94
  4. Step 4: Simplify right side
    12,688.34x = 74,689,588.48
  5. Step 5: Solve for x
    x = 74,689,588.48/12,688.34
  6. Step 6: Final answer
    x = 5,886.47

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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.