Home / 12,380.40-18,572.66-6,140.62

Finding the Fourth Proportional to 12,380.40, 18,572.66 and 6,140.62

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Solution

The fourth proportional to 12,380.40, 18,572.66 and 6,140.62 is: 9,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.40 : 18,572.66 = 6,140.62 : x
  2. Step 2: Convert to fraction form
    12,380.40/18,572.66 = 6,140.62/x
  3. Step 3: Cross multiply
    12,380.40x = 18,572.66 × 6,140.62
  4. Step 4: Simplify right side
    12,380.40x = 114,047,647.45
  5. Step 5: Solve for x
    x = 114,047,647.45/12,380.40
  6. Step 6: Final answer
    x = 9,211.95

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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.