Home / 21,944.98-30,284.51-12,989.22

Finding the Fourth Proportional to 21,944.98, 30,284.51 and 12,989.22

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Solution

The fourth proportional to 21,944.98, 30,284.51 and 12,989.22 is: 17,925.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,944.98 : 30,284.51 = 12,989.22 : x
  2. Step 2: Convert to fraction form
    21,944.98/30,284.51 = 12,989.22/x
  3. Step 3: Cross multiply
    21,944.98x = 30,284.51 × 12,989.22
  4. Step 4: Simplify right side
    21,944.98x = 393,372,162.98
  5. Step 5: Solve for x
    x = 393,372,162.98/21,944.98
  6. Step 6: Final answer
    x = 17,925.38

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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.