Home / 20,999.70-31,456.35-14,433.30

Finding the Fourth Proportional to 20,999.70, 31,456.35 and 14,433.30

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Solution

The fourth proportional to 20,999.70, 31,456.35 and 14,433.30 is: 21,620.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.70 : 31,456.35 = 14,433.30 : x
  2. Step 2: Convert to fraction form
    20,999.70/31,456.35 = 14,433.30/x
  3. Step 3: Cross multiply
    20,999.70x = 31,456.35 × 14,433.30
  4. Step 4: Simplify right side
    20,999.70x = 454,018,936.46
  5. Step 5: Solve for x
    x = 454,018,936.46/20,999.70
  6. Step 6: Final answer
    x = 21,620.26

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1.5x scale

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.