Home / 12,558.40-18,856.20-7,022.80

Finding the Fourth Proportional to 12,558.40, 18,856.20 and 7,022.80

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Solution

The fourth proportional to 12,558.40, 18,856.20 and 7,022.80 is: 10,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.40 : 18,856.20 = 7,022.80 : x
  2. Step 2: Convert to fraction form
    12,558.40/18,856.20 = 7,022.80/x
  3. Step 3: Cross multiply
    12,558.40x = 18,856.20 × 7,022.80
  4. Step 4: Simplify right side
    12,558.40x = 132,423,321.36
  5. Step 5: Solve for x
    x = 132,423,321.36/12,558.40
  6. Step 6: Final answer
    x = 10,544.60

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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.