Home / 19,772.94-27,289.14-12,972.72

Finding the Fourth Proportional to 19,772.94, 27,289.14 and 12,972.72

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Solution

The fourth proportional to 19,772.94, 27,289.14 and 12,972.72 is: 17,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.94 : 27,289.14 = 12,972.72 : x
  2. Step 2: Convert to fraction form
    19,772.94/27,289.14 = 12,972.72/x
  3. Step 3: Cross multiply
    19,772.94x = 27,289.14 × 12,972.72
  4. Step 4: Simplify right side
    19,772.94x = 354,014,372.26
  5. Step 5: Solve for x
    x = 354,014,372.26/19,772.94
  6. Step 6: Final answer
    x = 17,903.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.