Home / 21,022.14-31,487.96-9,912.18

Finding the Fourth Proportional to 21,022.14, 31,487.96 and 9,912.18

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Solution

The fourth proportional to 21,022.14, 31,487.96 and 9,912.18 is: 14,846.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.14 : 31,487.96 = 9,912.18 : x
  2. Step 2: Convert to fraction form
    21,022.14/31,487.96 = 9,912.18/x
  3. Step 3: Cross multiply
    21,022.14x = 31,487.96 × 9,912.18
  4. Step 4: Simplify right side
    21,022.14x = 312,114,327.35
  5. Step 5: Solve for x
    x = 312,114,327.35/21,022.14
  6. Step 6: Final answer
    x = 14,846.93

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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.