Home / 16,128.84-22,258.08-12,142.56

Finding the Fourth Proportional to 16,128.84, 22,258.08 and 12,142.56

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Solution

The fourth proportional to 16,128.84, 22,258.08 and 12,142.56 is: 16,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,128.84 : 22,258.08 = 12,142.56 : x
  2. Step 2: Convert to fraction form
    16,128.84/22,258.08 = 12,142.56/x
  3. Step 3: Cross multiply
    16,128.84x = 22,258.08 × 12,142.56
  4. Step 4: Simplify right side
    16,128.84x = 270,270,071.88
  5. Step 5: Solve for x
    x = 270,270,071.88/16,128.84
  6. Step 6: Final answer
    x = 16,756.94

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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.