Home / 12,126.32-16,733.76-6,748.64

Finding the Fourth Proportional to 12,126.32, 16,733.76 and 6,748.64

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Solution

The fourth proportional to 12,126.32, 16,733.76 and 6,748.64 is: 9,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.32 : 16,733.76 = 6,748.64 : x
  2. Step 2: Convert to fraction form
    12,126.32/16,733.76 = 6,748.64/x
  3. Step 3: Cross multiply
    12,126.32x = 16,733.76 × 6,748.64
  4. Step 4: Simplify right side
    12,126.32x = 112,930,122.09
  5. Step 5: Solve for x
    x = 112,930,122.09/12,126.32
  6. Step 6: Final answer
    x = 9,312.81

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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.