Home / 21,020.87-31,496.21-14,769.70

Finding the Fourth Proportional to 21,020.87, 31,496.21 and 14,769.70

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Solution

The fourth proportional to 21,020.87, 31,496.21 and 14,769.70 is: 22,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.87 : 31,496.21 = 14,769.70 : x
  2. Step 2: Convert to fraction form
    21,020.87/31,496.21 = 14,769.70/x
  3. Step 3: Cross multiply
    21,020.87x = 31,496.21 × 14,769.70
  4. Step 4: Simplify right side
    21,020.87x = 465,189,475.63
  5. Step 5: Solve for x
    x = 465,189,475.63/21,020.87
  6. Step 6: Final answer
    x = 22,129.88

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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.