Home / 21,776.36-30,016.67-16,390.71

Finding the Fourth Proportional to 21,776.36, 30,016.67 and 16,390.71

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Solution

The fourth proportional to 21,776.36, 30,016.67 and 16,390.71 is: 22,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.36 : 30,016.67 = 16,390.71 : x
  2. Step 2: Convert to fraction form
    21,776.36/30,016.67 = 16,390.71/x
  3. Step 3: Cross multiply
    21,776.36x = 30,016.67 × 16,390.71
  4. Step 4: Simplify right side
    21,776.36x = 491,994,451.18
  5. Step 5: Solve for x
    x = 491,994,451.18/21,776.36
  6. Step 6: Final answer
    x = 22,593.05

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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.