Home / 12,270.49-18,405.12-3,950.92

Finding the Fourth Proportional to 12,270.49, 18,405.12 and 3,950.92

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Solution

The fourth proportional to 12,270.49, 18,405.12 and 3,950.92 is: 5,926.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.49 : 18,405.12 = 3,950.92 : x
  2. Step 2: Convert to fraction form
    12,270.49/18,405.12 = 3,950.92/x
  3. Step 3: Cross multiply
    12,270.49x = 18,405.12 × 3,950.92
  4. Step 4: Simplify right side
    12,270.49x = 72,717,156.71
  5. Step 5: Solve for x
    x = 72,717,156.71/12,270.49
  6. Step 6: Final answer
    x = 5,926.18

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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.