Home / 12,280.57-18,426.30-6,435.79

Finding the Fourth Proportional to 12,280.57, 18,426.30 and 6,435.79

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Solution

The fourth proportional to 12,280.57, 18,426.30 and 6,435.79 is: 9,656.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.57 : 18,426.30 = 6,435.79 : x
  2. Step 2: Convert to fraction form
    12,280.57/18,426.30 = 6,435.79/x
  3. Step 3: Cross multiply
    12,280.57x = 18,426.30 × 6,435.79
  4. Step 4: Simplify right side
    12,280.57x = 118,587,797.28
  5. Step 5: Solve for x
    x = 118,587,797.28/12,280.57
  6. Step 6: Final answer
    x = 9,656.54

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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.