Home / 12,220.78-18,327.54-6,374.20

Finding the Fourth Proportional to 12,220.78, 18,327.54 and 6,374.20

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Solution

The fourth proportional to 12,220.78, 18,327.54 and 6,374.20 is: 9,559.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.78 : 18,327.54 = 6,374.20 : x
  2. Step 2: Convert to fraction form
    12,220.78/18,327.54 = 6,374.20/x
  3. Step 3: Cross multiply
    12,220.78x = 18,327.54 × 6,374.20
  4. Step 4: Simplify right side
    12,220.78x = 116,823,405.47
  5. Step 5: Solve for x
    x = 116,823,405.47/12,220.78
  6. Step 6: Final answer
    x = 9,559.41

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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.