Home / 21,765.69-30,053.62-16,721.92

Finding the Fourth Proportional to 21,765.69, 30,053.62 and 16,721.92

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Solution

The fourth proportional to 21,765.69, 30,053.62 and 16,721.92 is: 23,089.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.69 : 30,053.62 = 16,721.92 : x
  2. Step 2: Convert to fraction form
    21,765.69/30,053.62 = 16,721.92/x
  3. Step 3: Cross multiply
    21,765.69x = 30,053.62 × 16,721.92
  4. Step 4: Simplify right side
    21,765.69x = 502,554,229.35
  5. Step 5: Solve for x
    x = 502,554,229.35/21,765.69
  6. Step 6: Final answer
    x = 23,089.29

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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.