Home / 12,923.81-19,385.71-3,689.81

Finding the Fourth Proportional to 12,923.81, 19,385.71 and 3,689.81

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Solution

The fourth proportional to 12,923.81, 19,385.71 and 3,689.81 is: 5,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.81 : 19,385.71 = 3,689.81 : x
  2. Step 2: Convert to fraction form
    12,923.81/19,385.71 = 3,689.81/x
  3. Step 3: Cross multiply
    12,923.81x = 19,385.71 × 3,689.81
  4. Step 4: Simplify right side
    12,923.81x = 71,529,586.62
  5. Step 5: Solve for x
    x = 71,529,586.62/12,923.81
  6. Step 6: Final answer
    x = 5,534.71

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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.