Home / 11,821.31-16,313.18-6,443.80

Finding the Fourth Proportional to 11,821.31, 16,313.18 and 6,443.80

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Solution

The fourth proportional to 11,821.31, 16,313.18 and 6,443.80 is: 8,892.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.31 : 16,313.18 = 6,443.80 : x
  2. Step 2: Convert to fraction form
    11,821.31/16,313.18 = 6,443.80/x
  3. Step 3: Cross multiply
    11,821.31x = 16,313.18 × 6,443.80
  4. Step 4: Simplify right side
    11,821.31x = 105,118,844.61
  5. Step 5: Solve for x
    x = 105,118,844.61/11,821.31
  6. Step 6: Final answer
    x = 8,892.32

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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.