Home / 12,381.84-18,572.56-4,986.12

Finding the Fourth Proportional to 12,381.84, 18,572.56 and 4,986.12

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Solution

The fourth proportional to 12,381.84, 18,572.56 and 4,986.12 is: 7,479.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.84 : 18,572.56 = 4,986.12 : x
  2. Step 2: Convert to fraction form
    12,381.84/18,572.56 = 4,986.12/x
  3. Step 3: Cross multiply
    12,381.84x = 18,572.56 × 4,986.12
  4. Step 4: Simplify right side
    12,381.84x = 92,604,907.54
  5. Step 5: Solve for x
    x = 92,604,907.54/12,381.84
  6. Step 6: Final answer
    x = 7,479.09

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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.