Home / 13,123.84-19,685.44-3,889.92

Finding the Fourth Proportional to 13,123.84, 19,685.44 and 3,889.92

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Solution

The fourth proportional to 13,123.84, 19,685.44 and 3,889.92 is: 5,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.84 : 19,685.44 = 3,889.92 : x
  2. Step 2: Convert to fraction form
    13,123.84/19,685.44 = 3,889.92/x
  3. Step 3: Cross multiply
    13,123.84x = 19,685.44 × 3,889.92
  4. Step 4: Simplify right side
    13,123.84x = 76,574,786.76
  5. Step 5: Solve for x
    x = 76,574,786.76/13,123.84
  6. Step 6: Final answer
    x = 5,834.79

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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.