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Finding the Fourth Proportional to 21,751.88, 30,032.07 and 16,707.09

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Solution

The fourth proportional to 21,751.88, 30,032.07 and 16,707.09 is: 23,066.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.88 : 30,032.07 = 16,707.09 : x
  2. Step 2: Convert to fraction form
    21,751.88/30,032.07 = 16,707.09/x
  3. Step 3: Cross multiply
    21,751.88x = 30,032.07 × 16,707.09
  4. Step 4: Simplify right side
    21,751.88x = 501,748,546.34
  5. Step 5: Solve for x
    x = 501,748,546.34/21,751.88
  6. Step 6: Final answer
    x = 23,066.91

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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.