Home / 12,688.94-19,036.20-3,803.91

Finding the Fourth Proportional to 12,688.94, 19,036.20 and 3,803.91

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Solution

The fourth proportional to 12,688.94, 19,036.20 and 3,803.91 is: 5,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.94 : 19,036.20 = 3,803.91 : x
  2. Step 2: Convert to fraction form
    12,688.94/19,036.20 = 3,803.91/x
  3. Step 3: Cross multiply
    12,688.94x = 19,036.20 × 3,803.91
  4. Step 4: Simplify right side
    12,688.94x = 72,411,991.54
  5. Step 5: Solve for x
    x = 72,411,991.54/12,688.94
  6. Step 6: Final answer
    x = 5,706.70

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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.