Home / 19,687.84-27,178.32-12,135.52

Finding the Fourth Proportional to 19,687.84, 27,178.32 and 12,135.52

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Solution

The fourth proportional to 19,687.84, 27,178.32 and 12,135.52 is: 16,752.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.84 : 27,178.32 = 12,135.52 : x
  2. Step 2: Convert to fraction form
    19,687.84/27,178.32 = 12,135.52/x
  3. Step 3: Cross multiply
    19,687.84x = 27,178.32 × 12,135.52
  4. Step 4: Simplify right side
    19,687.84x = 329,823,045.93
  5. Step 5: Solve for x
    x = 329,823,045.93/19,687.84
  6. Step 6: Final answer
    x = 16,752.63

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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.