Home / 30,179.12-45,235.85-12,628.44

Finding the Fourth Proportional to 30,179.12, 45,235.85 and 12,628.44

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Solution

The fourth proportional to 30,179.12, 45,235.85 and 12,628.44 is: 18,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,179.12 : 45,235.85 = 12,628.44 : x
  2. Step 2: Convert to fraction form
    30,179.12/45,235.85 = 12,628.44/x
  3. Step 3: Cross multiply
    30,179.12x = 45,235.85 × 12,628.44
  4. Step 4: Simplify right side
    30,179.12x = 571,258,154.43
  5. Step 5: Solve for x
    x = 571,258,154.43/30,179.12
  6. Step 6: Final answer
    x = 18,928.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.