Home / 19,688.57-27,172.35-12,133.29

Finding the Fourth Proportional to 19,688.57, 27,172.35 and 12,133.29

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Solution

The fourth proportional to 19,688.57, 27,172.35 and 12,133.29 is: 16,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.57 : 27,172.35 = 12,133.29 : x
  2. Step 2: Convert to fraction form
    19,688.57/27,172.35 = 12,133.29/x
  3. Step 3: Cross multiply
    19,688.57x = 27,172.35 × 12,133.29
  4. Step 4: Simplify right side
    19,688.57x = 329,690,002.53
  5. Step 5: Solve for x
    x = 329,690,002.53/19,688.57
  6. Step 6: Final answer
    x = 16,745.25

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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.