Home / 19,690.84-27,182.46-12,138.52

Finding the Fourth Proportional to 19,690.84, 27,182.46 and 12,138.52

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Solution

The fourth proportional to 19,690.84, 27,182.46 and 12,138.52 is: 16,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.84 : 27,182.46 = 12,138.52 : x
  2. Step 2: Convert to fraction form
    19,690.84/27,182.46 = 12,138.52/x
  3. Step 3: Cross multiply
    19,690.84x = 27,182.46 × 12,138.52
  4. Step 4: Simplify right side
    19,690.84x = 329,954,834.36
  5. Step 5: Solve for x
    x = 329,954,834.36/19,690.84
  6. Step 6: Final answer
    x = 16,756.77

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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.