Home / 12,280.83-18,405.81-6,658.29

Finding the Fourth Proportional to 12,280.83, 18,405.81 and 6,658.29

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Solution

The fourth proportional to 12,280.83, 18,405.81 and 6,658.29 is: 9,979.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.83 : 18,405.81 = 6,658.29 : x
  2. Step 2: Convert to fraction form
    12,280.83/18,405.81 = 6,658.29/x
  3. Step 3: Cross multiply
    12,280.83x = 18,405.81 × 6,658.29
  4. Step 4: Simplify right side
    12,280.83x = 122,551,220.66
  5. Step 5: Solve for x
    x = 122,551,220.66/12,280.83
  6. Step 6: Final answer
    x = 9,979.07

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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.