Home / 20,180.84-27,863.28-12,630.24

Finding the Fourth Proportional to 20,180.84, 27,863.28 and 12,630.24

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Solution

The fourth proportional to 20,180.84, 27,863.28 and 12,630.24 is: 17,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.84 : 27,863.28 = 12,630.24 : x
  2. Step 2: Convert to fraction form
    20,180.84/27,863.28 = 12,630.24/x
  3. Step 3: Cross multiply
    20,180.84x = 27,863.28 × 12,630.24
  4. Step 4: Simplify right side
    20,180.84x = 351,919,913.59
  5. Step 5: Solve for x
    x = 351,919,913.59/20,180.84
  6. Step 6: Final answer
    x = 17,438.32

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1.5x scale

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.