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Finding the Fourth Proportional to 14,644.51, 21,939.21 and 7,240.30

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Solution

The fourth proportional to 14,644.51, 21,939.21 and 7,240.30 is: 10,846.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,644.51 : 21,939.21 = 7,240.30 : x
  2. Step 2: Convert to fraction form
    14,644.51/21,939.21 = 7,240.30/x
  3. Step 3: Cross multiply
    14,644.51x = 21,939.21 × 7,240.30
  4. Step 4: Simplify right side
    14,644.51x = 158,846,462.16
  5. Step 5: Solve for x
    x = 158,846,462.16/14,644.51
  6. Step 6: Final answer
    x = 10,846.83

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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.