Home / 12,153.07-18,230.64-3,387.99

Finding the Fourth Proportional to 12,153.07, 18,230.64 and 3,387.99

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Solution

The fourth proportional to 12,153.07, 18,230.64 and 3,387.99 is: 5,082.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.07 : 18,230.64 = 3,387.99 : x
  2. Step 2: Convert to fraction form
    12,153.07/18,230.64 = 3,387.99/x
  3. Step 3: Cross multiply
    12,153.07x = 18,230.64 × 3,387.99
  4. Step 4: Simplify right side
    12,153.07x = 61,765,281.67
  5. Step 5: Solve for x
    x = 61,765,281.67/12,153.07
  6. Step 6: Final answer
    x = 5,082.28

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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.