Home / 12,624.38-18,931.81-4,189.31

Finding the Fourth Proportional to 12,624.38, 18,931.81 and 4,189.31

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Solution

The fourth proportional to 12,624.38, 18,931.81 and 4,189.31 is: 6,282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.38 : 18,931.81 = 4,189.31 : x
  2. Step 2: Convert to fraction form
    12,624.38/18,931.81 = 4,189.31/x
  3. Step 3: Cross multiply
    12,624.38x = 18,931.81 × 4,189.31
  4. Step 4: Simplify right side
    12,624.38x = 79,311,220.95
  5. Step 5: Solve for x
    x = 79,311,220.95/12,624.38
  6. Step 6: Final answer
    x = 6,282.39

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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.