Home / 12,280.89-18,425.03-4,382.40

Finding the Fourth Proportional to 12,280.89, 18,425.03 and 4,382.40

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Solution

The fourth proportional to 12,280.89, 18,425.03 and 4,382.40 is: 6,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.89 : 18,425.03 = 4,382.40 : x
  2. Step 2: Convert to fraction form
    12,280.89/18,425.03 = 4,382.40/x
  3. Step 3: Cross multiply
    12,280.89x = 18,425.03 × 4,382.40
  4. Step 4: Simplify right side
    12,280.89x = 80,745,829.56
  5. Step 5: Solve for x
    x = 80,745,829.56/12,280.89
  6. Step 6: Final answer
    x = 6,574.92

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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.