Home / 12,288.60-18,440.10-4,498.20

Finding the Fourth Proportional to 12,288.60, 18,440.10 and 4,498.20

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Solution

The fourth proportional to 12,288.60, 18,440.10 and 4,498.20 is: 6,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.60 : 18,440.10 = 4,498.20 : x
  2. Step 2: Convert to fraction form
    12,288.60/18,440.10 = 4,498.20/x
  3. Step 3: Cross multiply
    12,288.60x = 18,440.10 × 4,498.20
  4. Step 4: Simplify right side
    12,288.60x = 82,947,257.82
  5. Step 5: Solve for x
    x = 82,947,257.82/12,288.60
  6. Step 6: Final answer
    x = 6,749.94

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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.