Home / 12,208.98-18,312.21-8,285.43

Finding the Fourth Proportional to 12,208.98, 18,312.21 and 8,285.43

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Solution

The fourth proportional to 12,208.98, 18,312.21 and 8,285.43 is: 12,427.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.98 : 18,312.21 = 8,285.43 : x
  2. Step 2: Convert to fraction form
    12,208.98/18,312.21 = 8,285.43/x
  3. Step 3: Cross multiply
    12,208.98x = 18,312.21 × 8,285.43
  4. Step 4: Simplify right side
    12,208.98x = 151,724,534.10
  5. Step 5: Solve for x
    x = 151,724,534.10/12,208.98
  6. Step 6: Final answer
    x = 12,427.29

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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.