Home / 12,281.64-18,419.22-4,885.80

Finding the Fourth Proportional to 12,281.64, 18,419.22 and 4,885.80

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Solution

The fourth proportional to 12,281.64, 18,419.22 and 4,885.80 is: 7,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.64 : 18,419.22 = 4,885.80 : x
  2. Step 2: Convert to fraction form
    12,281.64/18,419.22 = 4,885.80/x
  3. Step 3: Cross multiply
    12,281.64x = 18,419.22 × 4,885.80
  4. Step 4: Simplify right side
    12,281.64x = 89,992,625.08
  5. Step 5: Solve for x
    x = 89,992,625.08/12,281.64
  6. Step 6: Final answer
    x = 7,327.41

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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.