Home / 21,310.92-31,983.12-14,783.04

Finding the Fourth Proportional to 21,310.92, 31,983.12 and 14,783.04

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Solution

The fourth proportional to 21,310.92, 31,983.12 and 14,783.04 is: 22,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.92 : 31,983.12 = 14,783.04 : x
  2. Step 2: Convert to fraction form
    21,310.92/31,983.12 = 14,783.04/x
  3. Step 3: Cross multiply
    21,310.92x = 31,983.12 × 14,783.04
  4. Step 4: Simplify right side
    21,310.92x = 472,807,742.28
  5. Step 5: Solve for x
    x = 472,807,742.28/21,310.92
  6. Step 6: Final answer
    x = 22,186.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.