Home / 12,618.24-18,930.24-3,854.40

Finding the Fourth Proportional to 12,618.24, 18,930.24 and 3,854.40

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Solution

The fourth proportional to 12,618.24, 18,930.24 and 3,854.40 is: 5,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.24 : 18,930.24 = 3,854.40 : x
  2. Step 2: Convert to fraction form
    12,618.24/18,930.24 = 3,854.40/x
  3. Step 3: Cross multiply
    12,618.24x = 18,930.24 × 3,854.40
  4. Step 4: Simplify right side
    12,618.24x = 72,964,717.06
  5. Step 5: Solve for x
    x = 72,964,717.06/12,618.24
  6. Step 6: Final answer
    x = 5,782.48

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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.