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Finding the Fourth Proportional to 21,762.26, 30,020.86 and 14,213.01

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Solution

The fourth proportional to 21,762.26, 30,020.86 and 14,213.01 is: 19,606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.26 : 30,020.86 = 14,213.01 : x
  2. Step 2: Convert to fraction form
    21,762.26/30,020.86 = 14,213.01/x
  3. Step 3: Cross multiply
    21,762.26x = 30,020.86 × 14,213.01
  4. Step 4: Simplify right side
    21,762.26x = 426,686,633.28
  5. Step 5: Solve for x
    x = 426,686,633.28/21,762.26
  6. Step 6: Final answer
    x = 19,606.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.