Home / 11,927.12-16,459.12-6,621.76

Finding the Fourth Proportional to 11,927.12, 16,459.12 and 6,621.76

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Solution

The fourth proportional to 11,927.12, 16,459.12 and 6,621.76 is: 9,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927.12 : 16,459.12 = 6,621.76 : x
  2. Step 2: Convert to fraction form
    11,927.12/16,459.12 = 6,621.76/x
  3. Step 3: Cross multiply
    11,927.12x = 16,459.12 × 6,621.76
  4. Step 4: Simplify right side
    11,927.12x = 108,988,342.45
  5. Step 5: Solve for x
    x = 108,988,342.45/11,927.12
  6. Step 6: Final answer
    x = 9,137.86

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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.