Home / 12,191.84-18,281.22-3,869.60

Finding the Fourth Proportional to 12,191.84, 18,281.22 and 3,869.60

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Solution

The fourth proportional to 12,191.84, 18,281.22 and 3,869.60 is: 5,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.84 : 18,281.22 = 3,869.60 : x
  2. Step 2: Convert to fraction form
    12,191.84/18,281.22 = 3,869.60/x
  3. Step 3: Cross multiply
    12,191.84x = 18,281.22 × 3,869.60
  4. Step 4: Simplify right side
    12,191.84x = 70,741,008.91
  5. Step 5: Solve for x
    x = 70,741,008.91/12,191.84
  6. Step 6: Final answer
    x = 5,802.32

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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.