Home / 11,821.29-16,313.28-6,443.63

Finding the Fourth Proportional to 11,821.29, 16,313.28 and 6,443.63

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Solution

The fourth proportional to 11,821.29, 16,313.28 and 6,443.63 is: 8,892.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.29 : 16,313.28 = 6,443.63 : x
  2. Step 2: Convert to fraction form
    11,821.29/16,313.28 = 6,443.63/x
  3. Step 3: Cross multiply
    11,821.29x = 16,313.28 × 6,443.63
  4. Step 4: Simplify right side
    11,821.29x = 105,116,671.18
  5. Step 5: Solve for x
    x = 105,116,671.18/11,821.29
  6. Step 6: Final answer
    x = 8,892.15

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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.