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Finding the Fourth Proportional to 21,765.93, 30,053.93 and 16,722.15

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Solution

The fourth proportional to 21,765.93, 30,053.93 and 16,722.15 is: 23,089.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.93 : 30,053.93 = 16,722.15 : x
  2. Step 2: Convert to fraction form
    21,765.93/30,053.93 = 16,722.15/x
  3. Step 3: Cross multiply
    21,765.93x = 30,053.93 × 16,722.15
  4. Step 4: Simplify right side
    21,765.93x = 502,566,241.94
  5. Step 5: Solve for x
    x = 502,566,241.94/21,765.93
  6. Step 6: Final answer
    x = 23,089.58

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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.