Home / 11,748.40-16,212.66-6,443.20

Finding the Fourth Proportional to 11,748.40, 16,212.66 and 6,443.20

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Solution

The fourth proportional to 11,748.40, 16,212.66 and 6,443.20 is: 8,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,748.40 : 16,212.66 = 6,443.20 : x
  2. Step 2: Convert to fraction form
    11,748.40/16,212.66 = 6,443.20/x
  3. Step 3: Cross multiply
    11,748.40x = 16,212.66 × 6,443.20
  4. Step 4: Simplify right side
    11,748.40x = 104,461,410.91
  5. Step 5: Solve for x
    x = 104,461,410.91/11,748.40
  6. Step 6: Final answer
    x = 8,891.54

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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.