Home / 12,287.94-18,430.54-4,388.76

Finding the Fourth Proportional to 12,287.94, 18,430.54 and 4,388.76

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Solution

The fourth proportional to 12,287.94, 18,430.54 and 4,388.76 is: 6,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.94 : 18,430.54 = 4,388.76 : x
  2. Step 2: Convert to fraction form
    12,287.94/18,430.54 = 4,388.76/x
  3. Step 3: Cross multiply
    12,287.94x = 18,430.54 × 4,388.76
  4. Step 4: Simplify right side
    12,287.94x = 80,887,216.73
  5. Step 5: Solve for x
    x = 80,887,216.73/12,287.94
  6. Step 6: Final answer
    x = 6,582.65

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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.