Home / 12,281.36-18,411.62-4,381.49

Finding the Fourth Proportional to 12,281.36, 18,411.62 and 4,381.49

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Solution

The fourth proportional to 12,281.36, 18,411.62 and 4,381.49 is: 6,568.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.36 : 18,411.62 = 4,381.49 : x
  2. Step 2: Convert to fraction form
    12,281.36/18,411.62 = 4,381.49/x
  3. Step 3: Cross multiply
    12,281.36x = 18,411.62 × 4,381.49
  4. Step 4: Simplify right side
    12,281.36x = 80,670,214.95
  5. Step 5: Solve for x
    x = 80,670,214.95/12,281.36
  6. Step 6: Final answer
    x = 6,568.51

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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.