Home / 21,778.24-30,054.28-16,317.64

Finding the Fourth Proportional to 21,778.24, 30,054.28 and 16,317.64

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Solution

The fourth proportional to 21,778.24, 30,054.28 and 16,317.64 is: 22,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.24 : 30,054.28 = 16,317.64 : x
  2. Step 2: Convert to fraction form
    21,778.24/30,054.28 = 16,317.64/x
  3. Step 3: Cross multiply
    21,778.24x = 30,054.28 × 16,317.64
  4. Step 4: Simplify right side
    21,778.24x = 490,414,921.50
  5. Step 5: Solve for x
    x = 490,414,921.50/21,778.24
  6. Step 6: Final answer
    x = 22,518.57

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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.