Home / 20,974.84-28,930.12-12,019.08

Finding the Fourth Proportional to 20,974.84, 28,930.12 and 12,019.08

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Solution

The fourth proportional to 20,974.84, 28,930.12 and 12,019.08 is: 16,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.84 : 28,930.12 = 12,019.08 : x
  2. Step 2: Convert to fraction form
    20,974.84/28,930.12 = 12,019.08/x
  3. Step 3: Cross multiply
    20,974.84x = 28,930.12 × 12,019.08
  4. Step 4: Simplify right side
    20,974.84x = 347,713,426.69
  5. Step 5: Solve for x
    x = 347,713,426.69/20,974.84
  6. Step 6: Final answer
    x = 16,577.64

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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.